220705071 has 4 divisors (see below), whose sum is σ = 294273432. Its totient is φ = 147136712.

The previous prime is 220705057. The next prime is 220705081. The reversal of 220705071 is 170507022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220705071 - 2¹⁵ = 220672303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220705021) 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, 36784176 + ... + 36784181.

It is an arithmetic number, because the mean of its divisors is an integer number (73568358).

Almost surely, 2^220705071 is an apocalyptic number.

220705071 is a deficient number, since it is larger than the sum of its proper divisors (73568361).

220705071 is an equidigital number, since it uses as much as digits as its factorization.

220705071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73568360.

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 220705071 is about 14856.1458999298. The cubic root of 220705071 is about 604.3252920458.

The spelling of 220705071 in words is "two hundred twenty million, seven hundred five thousand, seventy-one".