716734638 has 12 divisors (see below), whose sum is σ = 1552925088. Its totient is φ = 238911540.

The previous prime is 716734619. The next prime is 716734639. The reversal of 716734638 is 836437617.

716734638 is a `hidden beast` number, since 7 + 1 + 6 + 7 + 3 + 4 + 638 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 716734593 and 716734602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (716734639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19909278 + ... + 19909313.

It is an arithmetic number, because the mean of its divisors is an integer number (129410424).

Almost surely, 2^716734638 is an apocalyptic number.

716734638 is an abundant number, since it is smaller than the sum of its proper divisors (836190450).

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

716734638 is a wasteful number, since it uses less digits than its factorization.

716734638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39818599 (or 39818596 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 716734638 is about 26771.9001566941. The cubic root of 716734638 is about 894.9239505516.

The spelling of 716734638 in words is "seven hundred sixteen million, seven hundred thirty-four thousand, six hundred thirty-eight".