677597891 has 8 divisors (see below), whose sum is σ = 680057040. Its totient is φ = 675144288.

The previous prime is 677597887. The next prime is 677597897. The reversal of 677597891 is 198795776.

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 677597891 - 2² = 677597887 is a prime.

It is a super-3 number, since 3×677597891³ (a number of 27 digits) contains 333 as substring.

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 677597891.

It is not an unprimeable number, because it can be changed into a prime (677597897) 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 7 ways as a sum of consecutive naturals, for example, 606065 + ... + 607181.

It is an arithmetic number, because the mean of its divisors is an integer number (85007130).

Almost surely, 2^677597891 is an apocalyptic number.

677597891 is a deficient number, since it is larger than the sum of its proper divisors (2459149).

677597891 is a wasteful number, since it uses less digits than its factorization.

677597891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2773.

The product of its digits is 6667920, while the sum is 59.

The square root of 677597891 is about 26030.7105358267. The cubic root of 677597891 is about 878.3292555103.

The spelling of 677597891 in words is "six hundred seventy-seven million, five hundred ninety-seven thousand, eight hundred ninety-one".