64641514 has 16 divisors (see below), whose sum is σ = 117332928. Its totient is φ = 26073792.

The previous prime is 64641509. The next prime is 64641539. The reversal of 64641514 is 41514646.

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, 135564 + ... + 136039.

It is an arithmetic number, because the mean of its divisors is an integer number (7333308).

Almost surely, 2^64641514 is an apocalyptic number.

64641514 is a deficient number, since it is larger than the sum of its proper divisors (52691414).

64641514 is a wasteful number, since it uses less digits than its factorization.

64641514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271629.

The product of its digits is 11520, while the sum is 31.

The square root of 64641514 is about 8039.9946517395. The cubic root of 64641514 is about 401.3320467050.

The spelling of 64641514 in words is "sixty-four million, six hundred forty-one thousand, five hundred fourteen".