64416136 has 8 divisors (see below), whose sum is σ = 120780270. Its totient is φ = 32208064.

The previous prime is 64416119. The next prime is 64416139. The reversal of 64416136 is 63161446.

It can be written as a sum of positive squares in only one way, i.e., 64160100 + 256036 = 8010^2 + 506^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 64416098 and 64416107.

It is not an unprimeable number, because it can be changed into a prime (64416139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4026001 + ... + 4026016.

Almost surely, 2^64416136 is an apocalyptic number.

It is an amenable number.

64416136 is a deficient number, since it is larger than the sum of its proper divisors (56364134).

64416136 is a wasteful number, since it uses less digits than its factorization.

64416136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8052023 (or 8052019 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 64416136 is about 8025.9663592617. The cubic root of 64416136 is about 400.8650777525.

The spelling of 64416136 in words is "sixty-four million, four hundred sixteen thousand, one hundred thirty-six".