220790879 has 8 divisors (see below), whose sum is σ = 222000240. Its totient is φ = 219585600.

The previous prime is 220790861. The next prime is 220790923. The reversal of 220790879 is 978097022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220790879 is a prime.

It is a super-2 number, since 2×220790879² = 97497224499185282, 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 (220790809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187964 + ... + 189134.

It is an arithmetic number, because the mean of its divisors is an integer number (27750030).

Almost surely, 2^220790879 is an apocalyptic number.

220790879 is a deficient number, since it is larger than the sum of its proper divisors (1209361).

220790879 is a wasteful number, since it uses less digits than its factorization.

220790879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 220790879 is about 14859.0335823027. The cubic root of 220790879 is about 604.4036005105.

The spelling of 220790879 in words is "two hundred twenty million, seven hundred ninety thousand, eight hundred seventy-nine".