766770677 has 4 divisors (see below), whose sum is σ = 777570336. Its totient is φ = 755971020.

The previous prime is 766770649. The next prime is 766770679. The reversal of 766770677 is 776077667.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 766770677 - 2²⁶ = 699661813 is a prime.

It is a super-2 number, since 2×766770677² = 1175874542214076658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766770679) 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, 5399723 + ... + 5399864.

It is an arithmetic number, because the mean of its divisors is an integer number (194392584).

Almost surely, 2^766770677 is an apocalyptic number.

It is an amenable number.

766770677 is a deficient number, since it is larger than the sum of its proper divisors (10799659).

766770677 is a wasteful number, since it uses less digits than its factorization.

766770677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10799658.

The product of its (nonzero) digits is 3630312, while the sum is 53.

The square root of 766770677 is about 27690.6243519354. The cubic root of 766770677 is about 915.2825138156.

The spelling of 766770677 in words is "seven hundred sixty-six million, seven hundred seventy thousand, six hundred seventy-seven".