220913065 has 8 divisors (see below), whose sum is σ = 265237128. Its totient is φ = 176636160.

The previous prime is 220913047. The next prime is 220913089. The reversal of 220913065 is 560319022.

It can be written as a sum of positive squares in 4 ways, for example, as 24324624 + 196588441 = 4932^2 + 14021^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220913065 - 2¹¹ = 220911017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 496 + ... + 21025.

It is an arithmetic number, because the mean of its divisors is an integer number (33154641).

Almost surely, 2^220913065 is an apocalyptic number.

It is an amenable number.

220913065 is a deficient number, since it is larger than the sum of its proper divisors (44324063).

220913065 is a wasteful number, since it uses less digits than its factorization.

220913065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23579.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 220913065 is about 14863.1445192463. The cubic root of 220913065 is about 604.5150725665.

The spelling of 220913065 in words is "two hundred twenty million, nine hundred thirteen thousand, sixty-five".