596640991 has 2 divisors, whose sum is σ = 596640992. Its totient is φ = 596640990.

The previous prime is 596640929. The next prime is 596640997. The reversal of 596640991 is 199046695.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 596640991 - 2⁹ = 596640479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (596640997) 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 as a sum of consecutive naturals, namely, 298320495 + 298320496.

It is an arithmetic number, because the mean of its divisors is an integer number (298320496).

Almost surely, 2^596640991 is an apocalyptic number.

596640991 is a deficient number, since it is larger than the sum of its proper divisors (1).

596640991 is an equidigital number, since it uses as much as digits as its factorization.

596640991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 596640991 is about 24426.2357108090. The cubic root of 596640991 is about 841.8557756861.

The spelling of 596640991 in words is "five hundred ninety-six million, six hundred forty thousand, nine hundred ninety-one".