647475 has 24 divisors (see below), whose sum is σ = 1093680. Its totient is φ = 337920.

The previous prime is 647453. The next prime is 647477. The reversal of 647475 is 574746.

647475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 647475 - 2⁸ = 647219 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 647475.

It is not an unprimeable number, because it can be changed into a prime (647477) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6627 + ... + 6723.

It is an arithmetic number, because the mean of its divisors is an integer number (45570).

2⁶⁴⁷⁴⁷⁵ is an apocalyptic number.

647475 is a deficient number, since it is larger than the sum of its proper divisors (446205).

647475 is a wasteful number, since it uses less digits than its factorization.

647475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 194 counting only the distinct ones).

The product of its digits is 23520, while the sum is 33.

The square root of 647475 is about 804.6583125775. The cubic root of 647475 is about 86.5115981196.

Adding to 647475 its reverse (574746), we get a palindrome (1222221).

The spelling of 647475 in words is "six hundred forty-seven thousand, four hundred seventy-five".