64763968 has 14 divisors (see below), whose sum is σ = 128516126. Its totient is φ = 32381952.

The previous prime is 64763903. The next prime is 64763971. The reversal of 64763968 is 86936746.

It can be written as a sum of positive squares in only one way, i.e., 61968384 + 2795584 = 7872^2 + 1672^2 .

It is a super-2 number, since 2×64763968² = 8388743102210048, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505905 + ... + 506032.

Almost surely, 2^64763968 is an apocalyptic number.

It is an amenable number.

64763968 is a deficient number, since it is larger than the sum of its proper divisors (63752158).

64763968 is a wasteful number, since it uses less digits than its factorization.

64763968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011949 (or 1011939 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 49.

The square root of 64763968 is about 8047.6063522019. The cubic root of 64763968 is about 401.5853086905.

The spelling of 64763968 in words is "sixty-four million, seven hundred sixty-three thousand, nine hundred sixty-eight".