677307921 has 8 divisors (see below), whose sum is σ = 924079200. Its totient is φ = 441037632.

The previous prime is 677307907. The next prime is 677307923. The reversal of 677307921 is 129703776.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 677307921 - 2⁶ = 677307857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (677307923) 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, 2625096 + ... + 2625353.

It is an arithmetic number, because the mean of its divisors is an integer number (115509900).

Almost surely, 2^677307921 is an apocalyptic number.

It is an amenable number.

677307921 is a deficient number, since it is larger than the sum of its proper divisors (246771279).

677307921 is a wasteful number, since it uses less digits than its factorization.

677307921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5250495.

The product of its (nonzero) digits is 111132, while the sum is 42.

The square root of 677307921 is about 26025.1401725332. The cubic root of 677307921 is about 878.2039474298.

The spelling of 677307921 in words is "six hundred seventy-seven million, three hundred seven thousand, nine hundred twenty-one".