64999336 has 8 divisors (see below), whose sum is σ = 121873770. Its totient is φ = 32499664.

The previous prime is 64999327. The next prime is 64999351. The reversal of 64999336 is 63399946.

It can be written as a sum of positive squares in only one way, i.e., 59382436 + 5616900 = 7706^2 + 2370^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 64999336.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4062451 + ... + 4062466.

Almost surely, 2^64999336 is an apocalyptic number.

It is an amenable number.

64999336 is a deficient number, since it is larger than the sum of its proper divisors (56874434).

64999336 is a wasteful number, since it uses less digits than its factorization.

64999336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8124923 (or 8124919 counting only the distinct ones).

The product of its digits is 944784, while the sum is 49.

The square root of 64999336 is about 8062.2165686615. The cubic root of 64999336 is about 402.0712067456.

The spelling of 64999336 in words is "sixty-four million, nine hundred ninety-nine thousand, three hundred thirty-six".