220078013 has 4 divisors (see below), whose sum is σ = 227666940. Its totient is φ = 212489088.

The previous prime is 220077989. The next prime is 220078087. The reversal of 220078013 is 310870022.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57183844 + 162894169 = 7562^2 + 12763^2 .

It is a cyclic number.

It is not a de Polignac number, because 220078013 - 2⁸ = 220077757 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220078013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220078813) 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, 3794420 + ... + 3794477.

It is an arithmetic number, because the mean of its divisors is an integer number (56916735).

Almost surely, 2^220078013 is an apocalyptic number.

It is an amenable number.

220078013 is a deficient number, since it is larger than the sum of its proper divisors (7588927).

220078013 is an equidigital number, since it uses as much as digits as its factorization.

220078013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7588926.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 220078013 is about 14835.0265587898. The cubic root of 220078013 is about 603.7524212646.

The spelling of 220078013 in words is "two hundred twenty million, seventy-eight thousand, thirteen".