64667044 has 36 divisors (see below), whose sum is σ = 124042324. Its totient is φ = 29323008.

The previous prime is 64667027. The next prime is 64667059. The reversal of 64667044 is 44076646.

It can be written as a sum of positive squares in 6 ways, for example, as 22676644 + 41990400 = 4762^2 + 6480^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64666994 and 64667012.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 411814 + ... + 411970.

Almost surely, 2^64667044 is an apocalyptic number.

It is an amenable number.

64667044 is a deficient number, since it is larger than the sum of its proper divisors (59375280).

64667044 is a wasteful number, since it uses less digits than its factorization.

64667044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 37.

The square root of 64667044 is about 8041.5821826305. The cubic root of 64667044 is about 401.3848747713.

The spelling of 64667044 in words is "sixty-four million, six hundred sixty-seven thousand, forty-four".