677031997 has 8 divisors (see below), whose sum is σ = 714657600. Its totient is φ = 639605664.

The previous prime is 677031991. The next prime is 677032001. The reversal of 677031997 is 799130776.

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

It is not a de Polignac number, because 677031997 - 2¹¹ = 677029949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 677031997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677031991) 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, 42808 + ... + 56449.

It is an arithmetic number, because the mean of its divisors is an integer number (89332200).

Almost surely, 2^677031997 is an apocalyptic number.

It is an amenable number.

677031997 is a deficient number, since it is larger than the sum of its proper divisors (37625603).

677031997 is a wasteful number, since it uses less digits than its factorization.

677031997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99635.

The product of its (nonzero) digits is 500094, while the sum is 49.

The square root of 677031997 is about 26019.8385275543. The cubic root of 677031997 is about 878.0846759969.

The spelling of 677031997 in words is "six hundred seventy-seven million, thirty-one thousand, nine hundred ninety-seven".