64763136 has 54 divisors (see below), whose sum is σ = 186734730. Its totient is φ = 21586944.

The previous prime is 64763131. The next prime is 64763137. The reversal of 64763136 is 63136746.

It is a happy number.

64763136 is a `hidden beast` number, since 647 + 6 + 3 + 1 + 3 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 34292736 + 30470400 = 5856^2 + 5520^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 64763136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64763131) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 11751 + ... + 16358.

Almost surely, 2^64763136 is an apocalyptic number.

It is an amenable number.

64763136 is an abundant number, since it is smaller than the sum of its proper divisors (121971594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64763136 is a wasteful number, since it uses less digits than its factorization.

64763136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28131 (or 28114 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 64763136 is about 8047.5546596466. The cubic root of 64763136 is about 401.5835890079.

The spelling of 64763136 in words is "sixty-four million, seven hundred sixty-three thousand, one hundred thirty-six".