996680591 has 2 divisors, whose sum is σ = 996680592. Its totient is φ = 996680590.

The previous prime is 996680561. The next prime is 996680609. The reversal of 996680591 is 195086699.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 996680591 - 2⁶ = 996680527 is a prime.

It is a super-2 number, since 2×996680591² = 1986744400952218562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (996680561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498340295 + 498340296.

It is an arithmetic number, because the mean of its divisors is an integer number (498340296).

Almost surely, 2^996680591 is an apocalyptic number.

996680591 is a deficient number, since it is larger than the sum of its proper divisors (1).

996680591 is an equidigital number, since it uses as much as digits as its factorization.

996680591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1049760, while the sum is 53.

The square root of 996680591 is about 31570.2485102668. The cubic root of 996680591 is about 998.8923037955.

The spelling of 996680591 in words is "nine hundred ninety-six million, six hundred eighty thousand, five hundred ninety-one".