647612 has 24 divisors (see below), whose sum is σ = 1313760. Its totient is φ = 273600.

The previous prime is 647609. The next prime is 647617. The reversal of 647612 is 216746.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

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 647612.

It is not an unprimeable number, because it can be changed into a prime (647617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2714 + ... + 2942.

It is an arithmetic number, because the mean of its divisors is an integer number (54740).

2⁶⁴⁷⁶¹² is an apocalyptic number.

It is an amenable number.

647612 is an abundant number, since it is smaller than the sum of its proper divisors (666148).

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

647612 is a wasteful number, since it uses less digits than its factorization.

647612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 339 counting only the distinct ones).

The product of its digits is 2016, while the sum is 26.

The square root of 647612 is about 804.7434373762. The cubic root of 647612 is about 86.5176993864.

The spelling of 647612 in words is "six hundred forty-seven thousand, six hundred twelve".