77694749677 has 8 divisors (see below), whose sum is σ = 78353739000. Its totient is φ = 77037594624.

The previous prime is 77694749659. The next prime is 77694749689.

77694749677 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 3595921156 + 74098828521 = 59966^2 + 272211^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77694749677 - 2⁷ = 77694749549 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 (77694789677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373428 + ... + 542989.

It is an arithmetic number, because the mean of its divisors is an integer number (9794217375).

Almost surely, 2^77694749677 is an apocalyptic number.

It is an amenable number.

77694749677 is a deficient number, since it is larger than the sum of its proper divisors (658989323).

77694749677 is a wasteful number, since it uses less digits than its factorization.

77694749677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917135.

The product of its digits is 784147392, while the sum is 73.

The spelling of 77694749677 in words is "seventy-seven billion, six hundred ninety-four million, seven hundred forty-nine thousand, six hundred seventy-seven".