64699436 has 12 divisors (see below), whose sum is σ = 113733312. Its totient is φ = 32204208.

The previous prime is 64699429. The next prime is 64699441. The reversal of 64699436 is 63499646.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35375 + ... + 37158.

It is an arithmetic number, because the mean of its divisors is an integer number (9477776).

Almost surely, 2^64699436 is an apocalyptic number.

It is an amenable number.

64699436 is a deficient number, since it is larger than the sum of its proper divisors (49033876).

64699436 is a wasteful number, since it uses less digits than its factorization.

64699436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72760 (or 72758 counting only the distinct ones).

The product of its digits is 839808, while the sum is 47.

The square root of 64699436 is about 8043.5959620060. The cubic root of 64699436 is about 401.4518820535.

The spelling of 64699436 in words is "sixty-four million, six hundred ninety-nine thousand, four hundred thirty-six".