765538249 has 8 divisors (see below), whose sum is σ = 875195840. Its totient is φ = 655954416.

The previous prime is 765538219. The next prime is 765538289. The reversal of 765538249 is 942835567.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 765538249 - 2²³ = 757149641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (765538219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5962 + ... + 39580.

It is an arithmetic number, because the mean of its divisors is an integer number (109399480).

Almost surely, 2^765538249 is an apocalyptic number.

It is an amenable number.

765538249 is a deficient number, since it is larger than the sum of its proper divisors (109657591).

765538249 is a wasteful number, since it uses less digits than its factorization.

765538249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36879.

The product of its digits is 1814400, while the sum is 49.

The square root of 765538249 is about 27668.3618777838. The cubic root of 765538249 is about 914.7918739906.

The spelling of 765538249 in words is "seven hundred sixty-five million, five hundred thirty-eight thousand, two hundred forty-nine".