64510916 has 24 divisors (see below), whose sum is σ = 115200960. Its totient is φ = 31600800.

The previous prime is 64510889. The next prime is 64510921. The reversal of 64510916 is 61901546.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101921 + ... + 102551.

It is an arithmetic number, because the mean of its divisors is an integer number (4800040).

Almost surely, 2^64510916 is an apocalyptic number.

It is an amenable number.

64510916 is a deficient number, since it is larger than the sum of its proper divisors (50690044).

64510916 is a wasteful number, since it uses less digits than its factorization.

64510916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115 (or 1113 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 64510916 is about 8031.8687738284. The cubic root of 64510916 is about 401.0615884160.

The spelling of 64510916 in words is "sixty-four million, five hundred ten thousand, nine hundred sixteen".