64662645 has 32 divisors (see below), whose sum is σ = 110108160. Its totient is φ = 32291840.

The previous prime is 64662613. The next prime is 64662667. The reversal of 64662645 is 54626646.

It is not a de Polignac number, because 64662645 - 2⁵ = 64662613 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60415 + ... + 61475.

It is an arithmetic number, because the mean of its divisors is an integer number (3440880).

Almost surely, 2^64662645 is an apocalyptic number.

It is an amenable number.

64662645 is a deficient number, since it is larger than the sum of its proper divisors (45445515).

64662645 is a wasteful number, since it uses less digits than its factorization.

64662645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325.

The product of its digits is 207360, while the sum is 39.

The square root of 64662645 is about 8041.3086621520. The cubic root of 64662645 is about 401.3757731125.

The spelling of 64662645 in words is "sixty-four million, six hundred sixty-two thousand, six hundred forty-five".