64664087 has 8 divisors (see below), whose sum is σ = 69184560. Its totient is φ = 60255360.

The previous prime is 64664029. The next prime is 64664099. The reversal of 64664087 is 78046646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64664087 - 2⁸ = 64663831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64664687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26738 + ... + 29055.

It is an arithmetic number, because the mean of its divisors is an integer number (8648070).

Almost surely, 2^64664087 is an apocalyptic number.

64664087 is a deficient number, since it is larger than the sum of its proper divisors (4520473).

64664087 is a wasteful number, since it uses less digits than its factorization.

64664087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55873.

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 64664087 is about 8041.3983236748. The cubic root of 64664087 is about 401.3787566979.

The spelling of 64664087 in words is "sixty-four million, six hundred sixty-four thousand, eighty-seven".