66296560 has 40 divisors (see below), whose sum is σ = 168154416. Its totient is φ = 24107520.

The previous prime is 66296543. The next prime is 66296561. The reversal of 66296560 is 6569266.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66296561) 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, 36789 + ... + 38548.

Almost surely, 2^66296560 is an apocalyptic number.

It is an amenable number.

66296560 is an abundant number, since it is smaller than the sum of its proper divisors (101857856).

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

66296560 is a wasteful number, since it uses less digits than its factorization.

66296560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75361 (or 75355 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 66296560 is about 8142.2699537660. The cubic root of 66296560 is about 404.7283856815.

The spelling of 66296560 in words is "sixty-six million, two hundred ninety-six thousand, five hundred sixty".