66632260 has 24 divisors (see below), whose sum is σ = 140668416. Its totient is φ = 26511840.

The previous prime is 66632249. The next prime is 66632261. The reversal of 66632260 is 6223666.

It is a super-3 number, since 3×66632260³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (66632261) 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, 4902 + ... + 12541.

It is an arithmetic number, because the mean of its divisors is an integer number (5861184).

Almost surely, 2^66632260 is an apocalyptic number.

It is an amenable number.

66632260 is an abundant number, since it is smaller than the sum of its proper divisors (74036156).

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

66632260 is a wasteful number, since it uses less digits than its factorization.

66632260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17643 (or 17641 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 66632260 is about 8162.8585679283. The cubic root of 66632260 is about 405.4103649355.

The spelling of 66632260 in words is "sixty-six million, six hundred thirty-two thousand, two hundred sixty".