977396677 has 4 divisors (see below), whose sum is σ = 979062336. Its totient is φ = 975731020.

The previous prime is 977396671. The next prime is 977396723. The reversal of 977396677 is 776693779.

977396677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-977396677 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 (977396671) 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, 831949 + ... + 833122.

It is an arithmetic number, because the mean of its divisors is an integer number (244765584).

Almost surely, 2^977396677 is an apocalyptic number.

It is an amenable number.

977396677 is a deficient number, since it is larger than the sum of its proper divisors (1665659).

977396677 is a wasteful number, since it uses less digits than its factorization.

977396677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665658.

The product of its digits is 21003948, while the sum is 61.

The square root of 977396677 is about 31263.3439830099. The cubic root of 977396677 is about 992.4080674195.

The spelling of 977396677 in words is "nine hundred seventy-seven million, three hundred ninety-six thousand, six hundred seventy-seven".