220516465 has 8 divisors (see below), whose sum is σ = 284975208. Its totient is φ = 162842880.

The previous prime is 220516441. The next prime is 220516501. The reversal of 220516465 is 564615022.

It can be written as a sum of positive squares in 4 ways, for example, as 35093776 + 185422689 = 5924^2 + 13617^2 .

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

It is not a de Polignac number, because 220516465 - 2¹⁷ = 220385393 is a prime.

It is a super-2 number, since 2×220516465² = 97255022672192450, which contains 22 as substring.

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, 1696216 + ... + 1696345.

It is an arithmetic number, because the mean of its divisors is an integer number (35621901).

Almost surely, 2^220516465 is an apocalyptic number.

It is an amenable number.

220516465 is a deficient number, since it is larger than the sum of its proper divisors (64458743).

220516465 is a wasteful number, since it uses less digits than its factorization.

220516465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3392579.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 220516465 is about 14849.7967999566. The cubic root of 220516465 is about 604.1530986621.

The spelling of 220516465 in words is "two hundred twenty million, five hundred sixteen thousand, four hundred sixty-five".