220714581 has 4 divisors (see below), whose sum is σ = 294286112. Its totient is φ = 147143052.

The previous prime is 220714567. The next prime is 220714589. The reversal of 220714581 is 185417022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 220714581 - 2⁶ = 220714517 is a prime.

It is a super-2 number, since 2×220714581² = 97429852532011122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220714589) 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, 36785761 + ... + 36785766.

It is an arithmetic number, because the mean of its divisors is an integer number (73571528).

Almost surely, 2^220714581 is an apocalyptic number.

It is an amenable number.

220714581 is a deficient number, since it is larger than the sum of its proper divisors (73571531).

220714581 is an equidigital number, since it uses as much as digits as its factorization.

220714581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73571530.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 220714581 is about 14856.4659660365. The cubic root of 220714581 is about 604.3339718811. Note that the first 3 decimals are identical.

The spelling of 220714581 in words is "two hundred twenty million, seven hundred fourteen thousand, five hundred eighty-one".