220537701 has 8 divisors (see below), whose sum is σ = 326722560. Its totient is φ = 147025116.

The previous prime is 220537679. The next prime is 220537703. The reversal of 220537701 is 107735022.

It is not a de Polignac number, because 220537701 - 2⁹ = 220537189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 8168063 = 220537701 / (2 + 2 + 0 + 5 + 3 + 7 + 7 + 0 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220537703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4084005 + ... + 4084058.

It is an arithmetic number, because the mean of its divisors is an integer number (40840320).

Almost surely, 2^220537701 is an apocalyptic number.

It is an amenable number.

220537701 is a deficient number, since it is larger than the sum of its proper divisors (106184859).

220537701 is an equidigital number, since it uses as much as digits as its factorization.

220537701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8168072 (or 8168066 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 220537701 is about 14850.5118093620. The cubic root of 220537701 is about 604.1724915956.

The spelling of 220537701 in words is "two hundred twenty million, five hundred thirty-seven thousand, seven hundred one".