220864970 has 8 divisors (see below), whose sum is σ = 397556964. Its totient is φ = 88345984.

The previous prime is 220864967. The next prime is 220864979. The reversal of 220864970 is 79468022.

It can be written as a sum of positive squares in 2 ways, for example, as 186513649 + 34351321 = 13657^2 + 5861^2 .

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

It is not an unprimeable number, because it can be changed into a prime (220864979) 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, 11043239 + ... + 11043258.

Almost surely, 2^220864970 is an apocalyptic number.

220864970 is a deficient number, since it is larger than the sum of its proper divisors (176691994).

220864970 is a wasteful number, since it uses less digits than its factorization.

220864970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22086504.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 220864970 is about 14861.5265030211. The cubic root of 220864970 is about 604.4711997085.

The spelling of 220864970 in words is "two hundred twenty million, eight hundred sixty-four thousand, nine hundred seventy".