677120664751 has 4 divisors (see below), whose sum is σ = 680157080512. Its totient is φ = 674084248992.

The previous prime is 677120664733. The next prime is 677120664799. The reversal of 677120664751 is 157466021776.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 677120664751 - 2⁵ = 677120664719 is a prime.

It is a super-2 number, since 2×677120664751² (a number of 24 digits) 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 (677120661751) 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, 1518207546 + ... + 1518207991.

It is an arithmetic number, because the mean of its divisors is an integer number (170039270128).

Almost surely, 2^677120664751 is an apocalyptic number.

677120664751 is a deficient number, since it is larger than the sum of its proper divisors (3036415761).

677120664751 is a wasteful number, since it uses less digits than its factorization.

677120664751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036415760.

The product of its (nonzero) digits is 2963520, while the sum is 52.

The spelling of 677120664751 in words is "six hundred seventy-seven billion, one hundred twenty million, six hundred sixty-four thousand, seven hundred fifty-one".