220776970 has 16 divisors (see below), whose sum is σ = 397911528. Its totient is φ = 88196800.

The previous prime is 220776953. The next prime is 220776991. The reversal of 220776970 is 79677022.

It can be written as a sum of positive squares in 4 ways, for example, as 167676601 + 53100369 = 12949^2 + 7287^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5881 + ... + 21820.

Almost surely, 2^220776970 is an apocalyptic number.

220776970 is a deficient number, since it is larger than the sum of its proper divisors (177134558).

220776970 is a wasteful number, since it uses less digits than its factorization.

220776970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28505.

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 220776970 is about 14858.5655431472. The cubic root of 220776970 is about 604.3909085215.

The spelling of 220776970 in words is "two hundred twenty million, seven hundred seventy-six thousand, nine hundred seventy".