677656220 has 12 divisors (see below), whose sum is σ = 1423078104. Its totient is φ = 271062480.

The previous prime is 677656219. The next prime is 677656229. The reversal of 677656220 is 22656776.

It is a happy number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677656229) 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 3 ways as a sum of consecutive naturals, for example, 16941386 + ... + 16941425.

It is an arithmetic number, because the mean of its divisors is an integer number (118589842).

Almost surely, 2^677656220 is an apocalyptic number.

It is an amenable number.

677656220 is an abundant number, since it is smaller than the sum of its proper divisors (745421884).

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

677656220 is a wasteful number, since it uses less digits than its factorization.

677656220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33882820 (or 33882818 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 677656220 is about 26031.8308998810. The cubic root of 677656220 is about 878.3544575748.

The spelling of 677656220 in words is "six hundred seventy-seven million, six hundred fifty-six thousand, two hundred twenty".