64689796 has 6 divisors (see below), whose sum is σ = 113207150. Its totient is φ = 32344896.

The previous prime is 64689791. The next prime is 64689803. The reversal of 64689796 is 69798646.

64689796 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 58369600 + 6320196 = 7640^2 + 2514^2 .

It is not an unprimeable number, because it can be changed into a prime (64689791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8086221 + ... + 8086228.

Almost surely, 2^64689796 is an apocalyptic number.

It is an amenable number.

64689796 is a deficient number, since it is larger than the sum of its proper divisors (48517354).

64689796 is a wasteful number, since it uses less digits than its factorization.

64689796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16172453 (or 16172451 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 55.

The square root of 64689796 is about 8042.9967052088. The cubic root of 64689796 is about 401.4319427331.

The spelling of 64689796 in words is "sixty-four million, six hundred eighty-nine thousand, seven hundred ninety-six".