64166636 has 24 divisors (see below), whose sum is σ = 120340080. Its totient is φ = 29829632.

The previous prime is 64166611. The next prime is 64166657. The reversal of 64166636 is 63666146.

It is a super-4 number, since 4×64166636⁴ (a number of 32 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64166636.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41 + ... + 11328.

It is an arithmetic number, because the mean of its divisors is an integer number (5014170).

Almost surely, 2^64166636 is an apocalyptic number.

It is an amenable number.

64166636 is a deficient number, since it is larger than the sum of its proper divisors (56173444).

64166636 is a wasteful number, since it uses less digits than its factorization.

64166636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11473 (or 11471 counting only the distinct ones).

The product of its digits is 93312, while the sum is 38.

The square root of 64166636 is about 8010.4079796225. The cubic root of 64166636 is about 400.3468574711.

The spelling of 64166636 in words is "sixty-four million, one hundred sixty-six thousand, six hundred thirty-six".