772666677 has 12 divisors (see below), whose sum is σ = 1181725740. Its totient is φ = 484810368.

The previous prime is 772666663. The next prime is 772666703. The reversal of 772666677 is 776666277.

It can be written as a sum of positive squares in 2 ways, for example, as 222576561 + 550090116 = 14919^2 + 23454^2 .

It is not a de Polignac number, because 772666677 - 2⁷ = 772666549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772666637) 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, 2524902 + ... + 2525207.

It is an arithmetic number, because the mean of its divisors is an integer number (98477145).

Almost surely, 2^772666677 is an apocalyptic number.

It is an amenable number.

772666677 is a deficient number, since it is larger than the sum of its proper divisors (409059063).

772666677 is a wasteful number, since it uses less digits than its factorization.

772666677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5050132 (or 5050129 counting only the distinct ones).

The product of its digits is 6223392, while the sum is 54.

The square root of 772666677 is about 27796.8825050580. The cubic root of 772666677 is about 917.6225148536.

The spelling of 772666677 in words is "seven hundred seventy-two million, six hundred sixty-six thousand, six hundred seventy-seven".