677717321 has 8 divisors (see below), whose sum is σ = 680454144. Its totient is φ = 674987040.

The previous prime is 677717309. The next prime is 677717323. The reversal of 677717321 is 123717776.

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 677717321 - 2¹⁰ = 677716297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677717323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315176 + ... + 317318.

It is an arithmetic number, because the mean of its divisors is an integer number (85056768).

Almost surely, 2^677717321 is an apocalyptic number.

It is an amenable number.

677717321 is a deficient number, since it is larger than the sum of its proper divisors (2736823).

677717321 is a wasteful number, since it uses less digits than its factorization.

677717321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3271.

The product of its digits is 86436, while the sum is 41.

The square root of 677717321 is about 26033.0044558825. The cubic root of 677717321 is about 878.3808557795.

The spelling of 677717321 in words is "six hundred seventy-seven million, seven hundred seventeen thousand, three hundred twenty-one".