766972251 has 12 divisors (see below), whose sum is σ = 1146050880. Its totient is φ = 493683120.

The previous prime is 766972243. The next prime is 766972253. The reversal of 766972251 is 152279667.

It is not a de Polignac number, because 766972251 - 2³ = 766972243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 766972197 and 766972206.

It is not an unprimeable number, because it can be changed into a prime (766972253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1469035 + ... + 1469556.

It is an arithmetic number, because the mean of its divisors is an integer number (95504240).

Almost surely, 2^766972251 is an apocalyptic number.

766972251 is a deficient number, since it is larger than the sum of its proper divisors (379078629).

766972251 is a wasteful number, since it uses less digits than its factorization.

766972251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938626 (or 2938623 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 766972251 is about 27694.2638645623. The cubic root of 766972251 is about 915.3627120627.

The spelling of 766972251 in words is "seven hundred sixty-six million, nine hundred seventy-two thousand, two hundred fifty-one".