662794779 has 4 divisors (see below), whose sum is σ = 883726376. Its totient is φ = 441863184.

The previous prime is 662794723. The next prime is 662794843. The reversal of 662794779 is 977497266.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 662794779 - 2⁸ = 662794523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662794709) 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, 110465794 + ... + 110465799.

It is an arithmetic number, because the mean of its divisors is an integer number (220931594).

Almost surely, 2^662794779 is an apocalyptic number.

662794779 is a deficient number, since it is larger than the sum of its proper divisors (220931597).

662794779 is a wasteful number, since it uses less digits than its factorization.

662794779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220931596.

The product of its digits is 8001504, while the sum is 57.

The square root of 662794779 is about 25744.8010091358. The cubic root of 662794779 is about 871.8859773441.

The spelling of 662794779 in words is "six hundred sixty-two million, seven hundred ninety-four thousand, seven hundred seventy-nine".