677189520 has 120 divisors (see below), whose sum is σ = 2599137216. Its totient is φ = 154785024.

The previous prime is 677189459. The next prime is 677189521. The reversal of 677189520 is 25981776.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (677189521) 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 23 ways as a sum of consecutive naturals, for example, 62142 + ... + 72221.

Almost surely, 2^677189520 is an apocalyptic number.

677189520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

677189520 is an abundant number, since it is smaller than the sum of its proper divisors (1921947696).

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

677189520 is a wasteful number, since it uses less digits than its factorization.

677189520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134389 (or 134380 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The square root of 677189520 is about 26022.8653303206. The cubic root of 677189520 is about 878.1527711569.

The spelling of 677189520 in words is "six hundred seventy-seven million, one hundred eighty-nine thousand, five hundred twenty".