765487427 has 4 divisors (see below), whose sum is σ = 779930640. Its totient is φ = 751044216.

The previous prime is 765487399. The next prime is 765487439. The reversal of 765487427 is 724784567.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 765487427 - 2¹⁴ = 765471043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (765487477) 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 in 3 ways as a sum of consecutive naturals, for example, 7221527 + ... + 7221632.

It is an arithmetic number, because the mean of its divisors is an integer number (194982660).

Almost surely, 2^765487427 is an apocalyptic number.

765487427 is a deficient number, since it is larger than the sum of its proper divisors (14443213).

765487427 is a wasteful number, since it uses less digits than its factorization.

765487427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14443212.

The product of its digits is 2634240, while the sum is 50.

The square root of 765487427 is about 27667.4434489347. The cubic root of 765487427 is about 914.7716300287.

The spelling of 765487427 in words is "seven hundred sixty-five million, four hundred eighty-seven thousand, four hundred twenty-seven".