718968631 has 16 divisors (see below), whose sum is σ = 750487680. Its totient is φ = 688330080.

The previous prime is 718968599. The next prime is 718968637. The reversal of 718968631 is 136869817.

It is a cyclic number.

It is not a de Polignac number, because 718968631 - 2⁵ = 718968599 is a prime.

It is a super-2 number, since 2×718968631² = 1033831784724028322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (718968637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 384160 + ... + 386026.

It is an arithmetic number, because the mean of its divisors is an integer number (46905480).

Almost surely, 2^718968631 is an apocalyptic number.

718968631 is a deficient number, since it is larger than the sum of its proper divisors (31519049).

718968631 is a wasteful number, since it uses less digits than its factorization.

718968631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2094.

The product of its digits is 435456, while the sum is 49.

The square root of 718968631 is about 26813.5904160558. The cubic root of 718968631 is about 895.8527835133.

The spelling of 718968631 in words is "seven hundred eighteen million, nine hundred sixty-eight thousand, six hundred thirty-one".