677370666173 has 4 divisors (see below), whose sum is σ = 677418459900. Its totient is φ = 677322872448.

The previous prime is 677370666169. The next prime is 677370666179. The reversal of 677370666173 is 371666073776.

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

It can be written as a sum of positive squares in 2 ways, for example, as 673799647609 + 3571018564 = 820853^2 + 59758^2 .

It is a cyclic number.

It is not a de Polignac number, because 677370666173 - 2² = 677370666169 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 (677370666179) 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, 23875598 + ... + 23903951.

It is an arithmetic number, because the mean of its divisors is an integer number (169354614975).

Almost surely, 2^677370666173 is an apocalyptic number.

It is an amenable number.

677370666173 is a deficient number, since it is larger than the sum of its proper divisors (47793727).

677370666173 is a wasteful number, since it uses less digits than its factorization.

677370666173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47793726.

The product of its (nonzero) digits is 28005264, while the sum is 59.

The spelling of 677370666173 in words is "six hundred seventy-seven billion, three hundred seventy million, six hundred sixty-six thousand, one hundred seventy-three".