765523427 has 2 divisors, whose sum is σ = 765523428. Its totient is φ = 765523426.

The previous prime is 765523399. The next prime is 765523483. The reversal of 765523427 is 724325567.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 765523427 - 2¹² = 765519331 is a prime.

It is a super-2 number, since 2×765523427² = 1172052234571648658, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (765525427) 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 as a sum of consecutive naturals, namely, 382761713 + 382761714.

It is an arithmetic number, because the mean of its divisors is an integer number (382761714).

Almost surely, 2^765523427 is an apocalyptic number.

765523427 is a deficient number, since it is larger than the sum of its proper divisors (1).

765523427 is an equidigital number, since it uses as much as digits as its factorization.

765523427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 41.

The square root of 765523427 is about 27668.0940254294. The cubic root of 765523427 is about 914.7859700258.

The spelling of 765523427 in words is "seven hundred sixty-five million, five hundred twenty-three thousand, four hundred twenty-seven".