677956722340 has 12 divisors (see below), whose sum is σ = 1423709116956. Its totient is φ = 271182688928.

The previous prime is 677956722337. The next prime is 677956722341. The reversal of 677956722340 is 43227659776.

It can be written as a sum of positive squares in 2 ways, for example, as 329127100416 + 348829621924 = 573696^2 + 590618^2 .

It is not an unprimeable number, because it can be changed into a prime (677956722341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16948918039 + ... + 16948918078.

It is an arithmetic number, because the mean of its divisors is an integer number (118642426413).

Almost surely, 2^677956722340 is an apocalyptic number.

It is an amenable number.

677956722340 is an abundant number, since it is smaller than the sum of its proper divisors (745752394616).

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

677956722340 is a wasteful number, since it uses less digits than its factorization.

677956722340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33897836126 (or 33897836124 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 58.

The spelling of 677956722340 in words is "six hundred seventy-seven billion, nine hundred fifty-six million, seven hundred twenty-two thousand, three hundred forty".