677705556312 has 96 divisors (see below), whose sum is σ = 1858984498800. Its totient is φ = 223020594432.

The previous prime is 677705556271. The next prime is 677705556313. The reversal of 677705556312 is 213655507776.

677705556312 is a `hidden beast` number, since 6 + 7 + 7 + 70 + 5 + 5 + 563 + 1 + 2 = 666.

It is a hoax number, since the sum of its digits (54) 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 (677705556313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2018023 + ... + 2329769.

Almost surely, 2^677705556312 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 677705556312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (929492249400).

677705556312 is an abundant number, since it is smaller than the sum of its proper divisors (1181278942488).

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

677705556312 is a wasteful number, since it uses less digits than its factorization.

677705556312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312145 (or 312138 counting only the distinct ones).

The product of its (nonzero) digits is 9261000, while the sum is 54.

The spelling of 677705556312 in words is "six hundred seventy-seven billion, seven hundred five million, five hundred fifty-six thousand, three hundred twelve".