679222877 has 4 divisors (see below), whose sum is σ = 679487616. Its totient is φ = 678958140.

The previous prime is 679222871. The next prime is 679222889. The reversal of 679222877 is 778222976.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 679222877 - 2¹⁰ = 679221853 is a prime.

It is a super-2 number, since 2×679222877² = 922687433280314258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679222871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128483 + ... + 133664.

It is an arithmetic number, because the mean of its divisors is an integer number (169871904).

Almost surely, 2^679222877 is an apocalyptic number.

It is an amenable number.

679222877 is a deficient number, since it is larger than the sum of its proper divisors (264739).

679222877 is a wasteful number, since it uses less digits than its factorization.

679222877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264738.

The product of its digits is 1185408, while the sum is 50.

The square root of 679222877 is about 26061.9047078298. The cubic root of 679222877 is about 879.0308187525.

Subtracting 679222877 from its reverse (778222976), we obtain a palindrome (99000099).

The spelling of 679222877 in words is "six hundred seventy-nine million, two hundred twenty-two thousand, eight hundred seventy-seven".