64997036 has 12 divisors (see below), whose sum is σ = 122494512. Its totient is φ = 29998608.

The previous prime is 64996999. The next prime is 64997039. The reversal of 64997036 is 63079946.

It is a super-2 number, since 2×64997036² = 8449229377570592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64997039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 624920 + ... + 625023.

It is an arithmetic number, because the mean of its divisors is an integer number (10207876).

Almost surely, 2^64997036 is an apocalyptic number.

It is an amenable number.

64997036 is a deficient number, since it is larger than the sum of its proper divisors (57497476).

64997036 is a wasteful number, since it uses less digits than its factorization.

64997036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249960 (or 1249958 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 64997036 is about 8062.0739267263. The cubic root of 64997036 is about 402.0664642629.

The spelling of 64997036 in words is "sixty-four million, nine hundred ninety-seven thousand, thirty-six".