765630733 has 6 divisors (see below), whose sum is σ = 890631726. Its totient is φ = 656254872.

The previous prime is 765630721. The next prime is 765630779. The reversal of 765630733 is 337036567.

It can be written as a sum of positive squares in only one way, i.e., 761042569 + 4588164 = 27587^2 + 2142^2 .

It is a de Polignac number, because none of the positive numbers 2^k-765630733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (765630713) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7812510 + ... + 7812607.

It is an arithmetic number, because the mean of its divisors is an integer number (148438621).

Almost surely, 2^765630733 is an apocalyptic number.

It is an amenable number.

765630733 is a deficient number, since it is larger than the sum of its proper divisors (125000993).

765630733 is a wasteful number, since it uses less digits than its factorization.

765630733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15625131 (or 15625124 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 40.

The square root of 765630733 is about 27670.0331224955. The cubic root of 765630733 is about 914.8287109068.

The spelling of 765630733 in words is "seven hundred sixty-five million, six hundred thirty thousand, seven hundred thirty-three".