64667912 has 16 divisors (see below), whose sum is σ = 125433900. Its totient is φ = 31218880.

The previous prime is 64667893. The next prime is 64667921. The reversal of 64667912 is 21976646.

It can be written as a sum of positive squares in 2 ways, for example, as 63904036 + 763876 = 7994^2 + 874^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64667912.

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 in 3 ways as a sum of consecutive naturals, for example, 139139 + ... + 139602.

Almost surely, 2^64667912 is an apocalyptic number.

It is an amenable number.

64667912 is a deficient number, since it is larger than the sum of its proper divisors (60765988).

64667912 is a wasteful number, since it uses less digits than its factorization.

64667912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278776 (or 278772 counting only the distinct ones).

The product of its digits is 108864, while the sum is 41.

The square root of 64667912 is about 8041.6361519283. The cubic root of 64667912 is about 401.3866706397.

The spelling of 64667912 in words is "sixty-four million, six hundred sixty-seven thousand, nine hundred twelve".