64604533 has 16 divisors (see below), whose sum is σ = 76640256. Its totient is φ = 53308080.

The previous prime is 64604497. The next prime is 64604537. The reversal of 64604533 is 33540646.

It is a de Polignac number, because none of the positive numbers 2^k-64604533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64604495 and 64604504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64604537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19860 + ... + 22882.

It is an arithmetic number, because the mean of its divisors is an integer number (4790016).

Almost surely, 2^64604533 is an apocalyptic number.

It is an amenable number.

64604533 is a deficient number, since it is larger than the sum of its proper divisors (12035723).

64604533 is a wasteful number, since it uses less digits than its factorization.

64604533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3144.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 64604533 is about 8037.6945077553. The cubic root of 64604533 is about 401.2554989331.

The spelling of 64604533 in words is "sixty-four million, six hundred four thousand, five hundred thirty-three".