220474577 has 4 divisors (see below), whose sum is σ = 220673076. Its totient is φ = 220276080.

The previous prime is 220474561. The next prime is 220474621. The reversal of 220474577 is 775474022.

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

It can be written as a sum of positive squares in 2 ways, for example, as 86285521 + 134189056 = 9289^2 + 11584^2 .

It is a cyclic number.

It is not a de Polignac number, because 220474577 - 2⁴ = 220474561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220474577.

It is not an unprimeable number, because it can be changed into a prime (220474517) 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, 97574 + ... + 99807.

It is an arithmetic number, because the mean of its divisors is an integer number (55168269).

Almost surely, 2^220474577 is an apocalyptic number.

It is an amenable number.

220474577 is a deficient number, since it is larger than the sum of its proper divisors (198499).

220474577 is a wasteful number, since it uses less digits than its factorization.

220474577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198498.

The product of its (nonzero) digits is 109760, while the sum is 38.

The square root of 220474577 is about 14848.3863433034. The cubic root of 220474577 is about 604.1148424598.

The spelling of 220474577 in words is "two hundred twenty million, four hundred seventy-four thousand, five hundred seventy-seven".