677366561522 has 12 divisors (see below), whose sum is σ = 1181935530990. Its totient is φ = 290299954896.

The previous prime is 677366561503. The next prime is 677366561537. The reversal of 677366561522 is 225165663776.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 627931041241 + 49435520281 = 792421^2 + 222341^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 3455951747 + ... + 3455951942.

Almost surely, 2^677366561522 is an apocalyptic number.

677366561522 is a deficient number, since it is larger than the sum of its proper divisors (504568969468).

677366561522 is a wasteful number, since it uses less digits than its factorization.

677366561522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6911903705 (or 6911903698 counting only the distinct ones).

The product of its digits is 19051200, while the sum is 56.

The spelling of 677366561522 in words is "six hundred seventy-seven billion, three hundred sixty-six million, five hundred sixty-one thousand, five hundred twenty-two".