220190465 has 16 divisors (see below), whose sum is σ = 290169216. Its totient is φ = 159072000.

The previous prime is 220190447. The next prime is 220190471. The reversal of 220190465 is 564091022.

It is a happy number.

It is not a de Polignac number, because 220190465 - 2²⁶ = 153081601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4952 + ... + 21561.

It is an arithmetic number, because the mean of its divisors is an integer number (18135576).

Almost surely, 2^220190465 is an apocalyptic number.

It is an amenable number.

220190465 is a deficient number, since it is larger than the sum of its proper divisors (69978751).

220190465 is a wasteful number, since it uses less digits than its factorization.

220190465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26680.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 220190465 is about 14838.8161589798. The cubic root of 220190465 is about 603.8552357257.

The spelling of 220190465 in words is "two hundred twenty million, one hundred ninety thousand, four hundred sixty-five".