65872220 has 24 divisors (see below), whose sum is σ = 139560624. Its totient is φ = 26114816.

The previous prime is 65872217. The next prime is 65872223. The reversal of 65872220 is 2227856.

It is an interprime number because it is at equal distance from previous prime (65872217) and next prime (65872223).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65872223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12314 + ... + 16833.

It is an arithmetic number, because the mean of its divisors is an integer number (5815026).

Almost surely, 2^65872220 is an apocalyptic number.

It is an amenable number.

65872220 is an abundant number, since it is smaller than the sum of its proper divisors (73688404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65872220 is a wasteful number, since it uses less digits than its factorization.

65872220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29269 (or 29267 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 65872220 is about 8116.1702791403. The cubic root of 65872220 is about 403.8630307175.

The spelling of 65872220 in words is "sixty-five million, eight hundred seventy-two thousand, two hundred twenty".