766576493 has 4 divisors (see below), whose sum is σ = 766700028. Its totient is φ = 766452960.

The previous prime is 766576477. The next prime is 766576501. The reversal of 766576493 is 394675667.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 125372809 + 641203684 = 11197^2 + 25322^2 .

It is a cyclic number.

It is not a de Polignac number, because 766576493 - 2⁴ = 766576477 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 (766576403) 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, 51938 + ... + 65043.

It is an arithmetic number, because the mean of its divisors is an integer number (191675007).

Almost surely, 2^766576493 is an apocalyptic number.

It is an amenable number.

766576493 is a deficient number, since it is larger than the sum of its proper divisors (123535).

766576493 is a wasteful number, since it uses less digits than its factorization.

766576493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123534.

The product of its digits is 5715360, while the sum is 53.

The square root of 766576493 is about 27687.1178167754. The cubic root of 766576493 is about 915.2052424616.

The spelling of 766576493 in words is "seven hundred sixty-six million, five hundred seventy-six thousand, four hundred ninety-three".