677422392242 has 18 divisors (see below), whose sum is σ = 1072464090399. Its totient is φ = 320873815260.

The previous prime is 677422392197. The next prime is 677422392277. The reversal of 677422392242 is 242293224776.

It can be written as a sum of positive squares in only one way, i.e., 338711196121 + 338711196121 = 581989^2 + 581989^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=581989.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 22100267 + ... + 22130897.

Almost surely, 2^677422392242 is an apocalyptic number.

677422392242 is a deficient number, since it is larger than the sum of its proper divisors (395041698157).

677422392242 is an frugal number, since it uses more digits than its factorization.

677422392242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61302 (or 30652 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 50.

Multiplying 677422392242 by its sum of digits (50), we get a square (33871119612100 = 5819890²).

The spelling of 677422392242 in words is "six hundred seventy-seven billion, four hundred twenty-two million, three hundred ninety-two thousand, two hundred forty-two".