66565248 has 32 divisors (see below), whose sum is σ = 176814960. Its totient is φ = 22188288.

The previous prime is 66565241. The next prime is 66565259. The reversal of 66565248 is 84256566.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (66565241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86290 + ... + 87057.

Almost surely, 2^66565248 is an apocalyptic number.

It is an amenable number.

66565248 is an abundant number, since it is smaller than the sum of its proper divisors (110249712).

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

66565248 is a wasteful number, since it uses less digits than its factorization.

66565248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173364 (or 173352 counting only the distinct ones).

The product of its digits is 345600, while the sum is 42.

The square root of 66565248 is about 8158.7528458705. The cubic root of 66565248 is about 405.2744124111.

The spelling of 66565248 in words is "sixty-six million, five hundred sixty-five thousand, two hundred forty-eight".