64768587 has 16 divisors (see below), whose sum is σ = 97896960. Its totient is φ = 37759392.

The previous prime is 64768577. The next prime is 64768609. The reversal of 64768587 is 78586746.

It is not a de Polignac number, because 64768587 - 2¹⁴ = 64752203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64768507) 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, 42963 + ... + 44444.

It is an arithmetic number, because the mean of its divisors is an integer number (6118560).

Almost surely, 2^64768587 is an apocalyptic number.

64768587 is a deficient number, since it is larger than the sum of its proper divisors (33128373).

64768587 is a wasteful number, since it uses less digits than its factorization.

64768587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87442.

The product of its digits is 2257920, while the sum is 51.

The square root of 64768587 is about 8047.8933268278. The cubic root of 64768587 is about 401.5948555548.

The spelling of 64768587 in words is "sixty-four million, seven hundred sixty-eight thousand, five hundred eighty-seven".