716631566 has 36 divisors (see below), whose sum is σ = 1328384088. Its totient is φ = 289050048.

The previous prime is 716631563. The next prime is 716631571. The reversal of 716631566 is 665136617.

It is a super-2 number, since 2×716631566² = 1027121602775224712, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (716631563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15671 + ... + 40973.

It is an arithmetic number, because the mean of its divisors is an integer number (36899558).

Almost surely, 2^716631566 is an apocalyptic number.

716631566 is a deficient number, since it is larger than the sum of its proper divisors (611752522).

716631566 is a wasteful number, since it uses less digits than its factorization.

716631566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25353 (or 25329 counting only the distinct ones).

The product of its digits is 136080, while the sum is 41.

The square root of 716631566 is about 26769.9750840377. The cubic root of 716631566 is about 894.8810494933.

The spelling of 716631566 in words is "seven hundred sixteen million, six hundred thirty-one thousand, five hundred sixty-six".