64689395 has 12 divisors (see below), whose sum is σ = 81930240. Its totient is φ = 49026384.

The previous prime is 64689367. The next prime is 64689407. The reversal of 64689395 is 59398646.

It is not a de Polignac number, because 64689395 - 2⁸ = 64689139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16115 + ... + 19724.

It is an arithmetic number, because the mean of its divisors is an integer number (6827520).

Almost surely, 2^64689395 is an apocalyptic number.

64689395 is a deficient number, since it is larger than the sum of its proper divisors (17240845).

64689395 is a wasteful number, since it uses less digits than its factorization.

64689395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35882 (or 35863 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 50.

The square root of 64689395 is about 8042.9717766507. The cubic root of 64689395 is about 401.4311132641.

The spelling of 64689395 in words is "sixty-four million, six hundred eighty-nine thousand, three hundred ninety-five".