220657816 has 16 divisors (see below), whose sum is σ = 414327600. Its totient is φ = 110170464.

The previous prime is 220657813. The next prime is 220657819. The reversal of 220657816 is 618756022.

It is a happy number.

220657816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (220657813) and next prime (220657819).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220657813) 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, 13780 + ... + 25123.

It is an arithmetic number, because the mean of its divisors is an integer number (25895475).

Almost surely, 2^220657816 is an apocalyptic number.

It is an amenable number.

220657816 is a deficient number, since it is larger than the sum of its proper divisors (193669784).

220657816 is a wasteful number, since it uses less digits than its factorization.

220657816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39618 (or 39614 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 220657816 is about 14854.5553955681. Note that the first 3 decimals coincide. The cubic root of 220657816 is about 604.2821584197.

The spelling of 220657816 in words is "two hundred twenty million, six hundred fifty-seven thousand, eight hundred sixteen".