64630076724 has 18 divisors (see below), whose sum is σ = 163370471810. Its totient is φ = 21543358896.

The previous prime is 64630076717. The next prime is 64630076729. The reversal of 64630076724 is 42767003646.

64630076724 is a `hidden beast` number, since 6 + 4 + 630 + 0 + 7 + 6 + 7 + 2 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 37756376100 + 26873700624 = 194310^2 + 163932^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 64630076724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64630076729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 897639919 + ... + 897639990.

Almost surely, 2^64630076724 is an apocalyptic number.

It is an amenable number.

64630076724 is an abundant number, since it is smaller than the sum of its proper divisors (98740395086).

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

64630076724 is a wasteful number, since it uses less digits than its factorization.

64630076724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795279919 (or 1795279914 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 45.

The spelling of 64630076724 in words is "sixty-four billion, six hundred thirty million, seventy-six thousand, seven hundred twenty-four".