677987534 has 12 divisors (see below), whose sum is σ = 1162431384. Its totient is φ = 290524332.

The previous prime is 677987473. The next prime is 677987551. The reversal of 677987534 is 435789776.

It is a self number, because there is not a number n which added to its sum of digits gives 677987534.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 93947 + ... + 100905.

It is an arithmetic number, because the mean of its divisors is an integer number (96869282).

Almost surely, 2^677987534 is an apocalyptic number.

677987534 is a deficient number, since it is larger than the sum of its proper divisors (484443850).

677987534 is an frugal number, since it uses more digits than its factorization.

677987534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13927 (or 6968 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 56.

The square root of 677987534 is about 26038.1937545599. The cubic root of 677987534 is about 878.4975801527.

Multiplying 677987534 by its sum of digits (56), we get a square (37967301904 = 194852²).

The spelling of 677987534 in words is "six hundred seventy-seven million, nine hundred eighty-seven thousand, five hundred thirty-four".