677617997 has 16 divisors (see below), whose sum is σ = 785640960. Its totient is φ = 572427648.

The previous prime is 677617979. The next prime is 677617999. The reversal of 677617997 is 799716776.

It is a cyclic number.

It is not a de Polignac number, because 677617997 - 2²⁴ = 660840781 is a prime.

It is a super-2 number, since 2×677617997² = 918332299716584018, which 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 (677617999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 606083 + ... + 607199.

It is an arithmetic number, because the mean of its divisors is an integer number (49102560).

Almost surely, 2^677617997 is an apocalyptic number.

It is an amenable number.

677617997 is a deficient number, since it is larger than the sum of its proper divisors (108022963).

677617997 is a wasteful number, since it uses less digits than its factorization.

677617997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2300.

The product of its digits is 7001316, while the sum is 59.

The square root of 677617997 is about 26031.0967306412. The cubic root of 677617997 is about 878.3379428226.

The spelling of 677617997 in words is "six hundred seventy-seven million, six hundred seventeen thousand, nine hundred ninety-seven".