64542604 has 18 divisors (see below), whose sum is σ = 131390700. Its totient is φ = 27661032.

The previous prime is 64542593. The next prime is 64542607. The reversal of 64542604 is 40624546.

It is a super-2 number, since 2×64542604² = 8331495462201632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64542607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 164454 + ... + 164845.

Almost surely, 2^64542604 is an apocalyptic number.

It is an amenable number.

64542604 is an abundant number, since it is smaller than the sum of its proper divisors (66848096).

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

64542604 is a wasteful number, since it uses less digits than its factorization.

64542604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329317 (or 329308 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 64542604 is about 8033.8411734363. The cubic root of 64542604 is about 401.1272453109.

The spelling of 64542604 in words is "sixty-four million, five hundred forty-two thousand, six hundred four".