647352 has 64 divisors (see below), whose sum is σ = 1869600. Its totient is φ = 209952.

The previous prime is 647341. The next prime is 647357. The reversal of 647352 is 253746.

It is a happy number.

It is a super-2 number, since 2×647352² = 838129223808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

Its product of digits (5040) is a multiple of the sum of its prime divisors (42).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 647352.

It is not an unprimeable number, because it can be changed into a prime (647357) by changing a digit.

647352 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17478 + ... + 17514.

647352 is a Friedman number, since it can be written as 74*6^2*3^5, using all its digits and the basic arithmetic operations.

2⁶⁴⁷³⁵² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 647352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (934800).

647352 is an abundant number, since it is smaller than the sum of its proper divisors (1222248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

647352 is an equidigital number, since it uses as much as digits as its factorization.

647352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64 (or 42 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 647352 is about 804.5818789906. The cubic root of 647352 is about 86.5061196067.

It can be divided in two parts, 647 and 352, that added together give a palindrome (999).

The spelling of 647352 in words is "six hundred forty-seven thousand, three hundred fifty-two".