766713725 has 12 divisors (see below), whose sum is σ = 960141300. Its totient is φ = 607296000.

The previous prime is 766713721. The next prime is 766713749. The reversal of 766713725 is 527317667.

It can be written as a sum of positive squares in 6 ways, for example, as 67798756 + 698914969 = 8234^2 + 26437^2 .

It is not a de Polignac number, because 766713725 - 2² = 766713721 is a prime.

It is a super-3 number, since 3×766713725³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766713721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149300 + ... + 154349.

It is an arithmetic number, because the mean of its divisors is an integer number (80011775).

Almost surely, 2^766713725 is an apocalyptic number.

It is an amenable number.

766713725 is a deficient number, since it is larger than the sum of its proper divisors (193427575).

766713725 is a wasteful number, since it uses less digits than its factorization.

766713725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303760 (or 303755 counting only the distinct ones).

The product of its digits is 370440, while the sum is 44.

The square root of 766713725 is about 27689.5959703279. The cubic root of 766713725 is about 915.2598523420.

The spelling of 766713725 in words is "seven hundred sixty-six million, seven hundred thirteen thousand, seven hundred twenty-five".