220060640 has 24 divisors (see below), whose sum is σ = 519893640. Its totient is φ = 88024192.

The previous prime is 220060609. The next prime is 220060649. The reversal of 220060640 is 46060022.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220060649) 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, 687530 + ... + 687849.

It is an arithmetic number, because the mean of its divisors is an integer number (21662235).

Almost surely, 2^220060640 is an apocalyptic number.

220060640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220060640 is an abundant number, since it is smaller than the sum of its proper divisors (299833000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220060640 is a wasteful number, since it uses less digits than its factorization.

220060640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375394 (or 1375386 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 220060640 is about 14834.4410073316. The cubic root of 220060640 is about 603.7365340698.

The spelling of 220060640 in words is "two hundred twenty million, sixty thousand, six hundred forty".