765725738 has 8 divisors (see below), whose sum is σ = 1155904932. Its totient is φ = 380424096.

The previous prime is 765725731. The next prime is 765725759. The reversal of 765725738 is 837527567.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 633176569 + 132549169 = 25163^2 + 11513^2 .

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

It is not an unprimeable number, because it can be changed into a prime (765725731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1218995 + ... + 1219622.

Almost surely, 2^765725738 is an apocalyptic number.

765725738 is a deficient number, since it is larger than the sum of its proper divisors (390179194).

765725738 is a wasteful number, since it uses less digits than its factorization.

765725738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438776.

The product of its digits is 2469600, while the sum is 50.

The square root of 765725738 is about 27671.7498181810. The cubic root of 765725738 is about 914.8665488633.

The spelling of 765725738 in words is "seven hundred sixty-five million, seven hundred twenty-five thousand, seven hundred thirty-eight".