64691468 has 12 divisors (see below), whose sum is σ = 114075192. Its totient is φ = 32098560.

The previous prime is 64691467. The next prime is 64691507. The reversal of 64691468 is 86419646.

It is not an unprimeable number, because it can be changed into a prime (64691461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61205 + ... + 62252.

It is an arithmetic number, because the mean of its divisors is an integer number (9506266).

Almost surely, 2^64691468 is an apocalyptic number.

It is an amenable number.

64691468 is a deficient number, since it is larger than the sum of its proper divisors (49383724).

64691468 is a wasteful number, since it uses less digits than its factorization.

64691468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123592 (or 123590 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 64691468 is about 8043.1006458952. The cubic root of 64691468 is about 401.4354012302.

The spelling of 64691468 in words is "sixty-four million, six hundred ninety-one thousand, four hundred sixty-eight".