220868975 has 6 divisors (see below), whose sum is σ = 273877560. Its totient is φ = 176695160.

The previous prime is 220868971. The next prime is 220868987. The reversal of 220868975 is 579868022.

It is not a de Polignac number, because 220868975 - 2² = 220868971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220868971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4417355 + ... + 4417404.

It is an arithmetic number, because the mean of its divisors is an integer number (45646260).

Almost surely, 2^220868975 is an apocalyptic number.

220868975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

220868975 is a deficient number, since it is larger than the sum of its proper divisors (53008585).

220868975 is an equidigital number, since it uses as much as digits as its factorization.

220868975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8834769 (or 8834764 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 220868975 is about 14861.6612463076. The cubic root of 220868975 is about 604.4748533624.

The spelling of 220868975 in words is "two hundred twenty million, eight hundred sixty-eight thousand, nine hundred seventy-five".