677939793920 has 208 divisors, whose sum is σ = 1644615453312. Its totient is φ = 268234260480.

The previous prime is 677939793911. The next prime is 677939793931. The reversal of 677939793920 is 29397939776.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1038192314 + ... + 1038192966.

It is an arithmetic number, because the mean of its divisors is an integer number (7906805064).

Almost surely, 2^677939793920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 677939793920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (822307726656).

677939793920 is an abundant number, since it is smaller than the sum of its proper divisors (966675659392).

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

677939793920 is a wasteful number, since it uses less digits than its factorization.

677939793920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156 (or 1134 counting only the distinct ones).

The product of its (nonzero) digits is 243045684, while the sum is 71.

The spelling of 677939793920 in words is "six hundred seventy-seven billion, nine hundred thirty-nine million, seven hundred ninety-three thousand, nine hundred twenty".