766520426 has 12 divisors (see below), whose sum is σ = 1337500098. Its totient is φ = 328508712.

The previous prime is 766520369. The next prime is 766520459. The reversal of 766520426 is 624025667.

It can be written as a sum of positive squares in only one way, i.e., 581533225 + 184987201 = 24115^2 + 13601^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 766520426.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3910721 + ... + 3910916.

Almost surely, 2^766520426 is an apocalyptic number.

766520426 is a deficient number, since it is larger than the sum of its proper divisors (570979672).

766520426 is a wasteful number, since it uses less digits than its factorization.

766520426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7821653 (or 7821646 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 766520426 is about 27686.1052876709. The cubic root of 766520426 is about 915.1829293748.

The spelling of 766520426 in words is "seven hundred sixty-six million, five hundred twenty thousand, four hundred twenty-six".