787957591 has 2 divisors, whose sum is σ = 787957592. Its totient is φ = 787957590.

The previous prime is 787957589. The next prime is 787957601. The reversal of 787957591 is 195759787.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 787957591 - 2¹ = 787957589 is a prime.

Together with 787957589, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (787957091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393978795 + 393978796.

It is an arithmetic number, because the mean of its divisors is an integer number (393978796).

Almost surely, 2^787957591 is an apocalyptic number.

787957591 is a deficient number, since it is larger than the sum of its proper divisors (1).

787957591 is an equidigital number, since it uses as much as digits as its factorization.

787957591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5556600, while the sum is 58.

The square root of 787957591 is about 28070.5823060370. The cubic root of 787957591 is about 923.6362044149.

The spelling of 787957591 in words is "seven hundred eighty-seven million, nine hundred fifty-seven thousand, five hundred ninety-one".