77670207677 has 16 divisors (see below), whose sum is σ = 80055964800. Its totient is φ = 75323666880.

The previous prime is 77670207653. The next prime is 77670207679.

77670207677 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 77670207677 - 2⁸ = 77670207421 is a prime.

It is a super-2 number, since 2×77670207677² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77670207679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3361199 + ... + 3384227.

It is an arithmetic number, because the mean of its divisors is an integer number (5003497800).

Almost surely, 2^77670207677 is an apocalyptic number.

It is an amenable number.

77670207677 is a deficient number, since it is larger than the sum of its proper divisors (2385757123).

77670207677 is a wasteful number, since it uses less digits than its factorization.

77670207677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23876.

The product of its (nonzero) digits is 8470728, while the sum is 56.

The spelling of 77670207677 in words is "seventy-seven billion, six hundred seventy million, two hundred seven thousand, six hundred seventy-seven".