64981796 has 12 divisors (see below), whose sum is σ = 124056240. Its totient is φ = 29537160.

The previous prime is 64981789. The next prime is 64981799. The reversal of 64981796 is 69718946.

It is a super-2 number, since 2×64981796² = 8445267622771232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64981799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 738386 + ... + 738473.

It is an arithmetic number, because the mean of its divisors is an integer number (10338020).

Almost surely, 2^64981796 is an apocalyptic number.

It is an amenable number.

64981796 is a deficient number, since it is larger than the sum of its proper divisors (59074444).

64981796 is a wasteful number, since it uses less digits than its factorization.

64981796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476874 (or 1476872 counting only the distinct ones).

The product of its digits is 653184, while the sum is 50.

The square root of 64981796 is about 8061.1287050884. The cubic root of 64981796 is about 402.0350373329.

The spelling of 64981796 in words is "sixty-four million, nine hundred eighty-one thousand, seven hundred ninety-six".