716689231 has 4 divisors (see below), whose sum is σ = 716744952. Its totient is φ = 716633512.

The previous prime is 716689201. The next prime is 716689241. The reversal of 716689231 is 132986617.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 716689231 - 2¹¹ = 716687183 is a prime.

It is a super-2 number, since 2×716689231² = 1027286907662742722, 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 (716689201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2361 + ... + 37933.

It is an arithmetic number, because the mean of its divisors is an integer number (179186238).

Almost surely, 2^716689231 is an apocalyptic number.

716689231 is the 16932-nd centered pentagonal number.

716689231 is a deficient number, since it is larger than the sum of its proper divisors (55721).

716689231 is a wasteful number, since it uses less digits than its factorization.

716689231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55720.

The product of its digits is 108864, while the sum is 43.

The square root of 716689231 is about 26771.0521085743. The cubic root of 716689231 is about 894.9050515673.

The spelling of 716689231 in words is "seven hundred sixteen million, six hundred eighty-nine thousand, two hundred thirty-one".