64361672 has 16 divisors (see below), whose sum is σ = 124839900. Its totient is φ = 31071040.

The previous prime is 64361657. The next prime is 64361699. The reversal of 64361672 is 27616346.

It can be written as a sum of positive squares in 2 ways, for example, as 62188996 + 2172676 = 7886^2 + 1474^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138479 + ... + 138942.

Almost surely, 2^64361672 is an apocalyptic number.

It is an amenable number.

64361672 is a deficient number, since it is larger than the sum of its proper divisors (60478228).

64361672 is a wasteful number, since it uses less digits than its factorization.

64361672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277456 (or 277452 counting only the distinct ones).

The product of its digits is 36288, while the sum is 35.

The square root of 64361672 is about 8022.5726547037. The cubic root of 64361672 is about 400.7520684298.

The spelling of 64361672 in words is "sixty-four million, three hundred sixty-one thousand, six hundred seventy-two".