220644027 has 16 divisors (see below), whose sum is σ = 328776480. Its totient is φ = 146242656.

The previous prime is 220644023. The next prime is 220644031. The reversal of 220644027 is 720446022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (220644023) and next prime (220644031).

It is not a de Polignac number, because 220644027 - 2² = 220644023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (220644023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18948 + ... + 28289.

It is an arithmetic number, because the mean of its divisors is an integer number (20548530).

Almost surely, 2^220644027 is an apocalyptic number.

220644027 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

220644027 is a deficient number, since it is larger than the sum of its proper divisors (108132453).

220644027 is a wasteful number, since it uses less digits than its factorization.

220644027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47419 (or 47413 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 220644027 is about 14854.0912546005. The cubic root of 220644027 is about 604.2695708752.

The spelling of 220644027 in words is "two hundred twenty million, six hundred forty-four thousand, twenty-seven".