220308465 has 16 divisors (see below), whose sum is σ = 379608768. Its totient is φ = 108459456.

The previous prime is 220308461. The next prime is 220308469. The reversal of 220308465 is 564803022.

220308465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (220308461) and next prime (220308469).

It is not a de Polignac number, because 220308465 - 2² = 220308461 is a prime.

It is a super-3 number, since 3×220308465³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (220308461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564699 + ... + 565088.

It is an arithmetic number, because the mean of its divisors is an integer number (23725548).

Almost surely, 2^220308465 is an apocalyptic number.

It is an amenable number.

220308465 is a deficient number, since it is larger than the sum of its proper divisors (159300303).

220308465 is a wasteful number, since it uses less digits than its factorization.

220308465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129808.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 220308465 is about 14842.7916848550. The cubic root of 220308465 is about 603.9630850719.

The spelling of 220308465 in words is "two hundred twenty million, three hundred eight thousand, four hundred sixty-five".