677749518 has 20 divisors (see below), whose sum is σ = 1518661320. Its totient is φ = 225916452.

The previous prime is 677749511. The next prime is 677749519. The reversal of 677749518 is 815947776.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677749511) 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 9 ways as a sum of consecutive naturals, for example, 2091658 + ... + 2091981.

It is an arithmetic number, because the mean of its divisors is an integer number (75933066).

Almost surely, 2^677749518 is an apocalyptic number.

677749518 is an abundant number, since it is smaller than the sum of its proper divisors (840911802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

677749518 is a wasteful number, since it uses less digits than its factorization.

677749518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4183653 (or 4183644 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 54.

The square root of 677749518 is about 26033.6228366319. The cubic root of 677749518 is about 878.3947656008.

The spelling of 677749518 in words is "six hundred seventy-seven million, seven hundred forty-nine thousand, five hundred eighteen".