677597887 has 2 divisors, whose sum is σ = 677597888. Its totient is φ = 677597886.

The previous prime is 677597873. The next prime is 677597897. The reversal of 677597887 is 788795776.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677597887 is a prime.

It is a super-3 number, since 3×677597887³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677597897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338798943 + 338798944.

It is an arithmetic number, because the mean of its divisors is an integer number (338798944).

Almost surely, 2^677597887 is an apocalyptic number.

677597887 is a deficient number, since it is larger than the sum of its proper divisors (1).

677597887 is an equidigital number, since it uses as much as digits as its factorization.

677597887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41489280, while the sum is 64.

The square root of 677597887 is about 26030.7104589944. The cubic root of 677597887 is about 878.3292537820.

The spelling of 677597887 in words is "six hundred seventy-seven million, five hundred ninety-seven thousand, eight hundred eighty-seven".