64730736 has 60 divisors (see below), whose sum is σ = 207038832. Its totient is φ = 18494208.

The previous prime is 64730711. The next prime is 64730741. The reversal of 64730736 is 63703746.

64730736 is a `hidden beast` number, since 647 + 3 + 0 + 7 + 3 + 6 = 666.

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 64730736.

It is a congruent number.

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, 31101 + ... + 33116.

Almost surely, 2^64730736 is an apocalyptic number.

It is an amenable number.

64730736 is an abundant number, since it is smaller than the sum of its proper divisors (142308096).

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

64730736 is a wasteful number, since it uses less digits than its factorization.

64730736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64238 (or 64229 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 36.

The square root of 64730736 is about 8045.5413739537. The cubic root of 64730736 is about 401.5166091410.

The spelling of 64730736 in words is "sixty-four million, seven hundred thirty thousand, seven hundred thirty-six".