220061655 has 24 divisors (see below), whose sum is σ = 416117520. Its totient is φ = 106696320.

The previous prime is 220061627. The next prime is 220061683. The reversal of 220061655 is 556160022.

220061655 is a `hidden beast` number, since 2 + 2 + 0 + 0 + 6 + 1 + 655 = 666.

It is an interprime number because it is at equal distance from previous prime (220061627) and next prime (220061683).

It is not a de Polignac number, because 220061655 - 2⁵ = 220061623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221790 + ... + 222779.

It is an arithmetic number, because the mean of its divisors is an integer number (17338230).

Almost surely, 2^220061655 is an apocalyptic number.

220061655 is a deficient number, since it is larger than the sum of its proper divisors (196055865).

220061655 is a wasteful number, since it uses less digits than its factorization.

220061655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444591 (or 444588 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 220061655 is about 14834.4752182206. The cubic root of 220061655 is about 603.7374622861.

The spelling of 220061655 in words is "two hundred twenty million, sixty-one thousand, six hundred fifty-five".