66733260 has 48 divisors (see below), whose sum is σ = 203841792. Its totient is φ = 16177600.

The previous prime is 66733259. The next prime is 66733267. The reversal of 66733260 is 6233766.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (66733267) 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, 49896 + ... + 51215.

It is an arithmetic number, because the mean of its divisors is an integer number (4246704).

Almost surely, 2^66733260 is an apocalyptic number.

66733260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66733260 is an abundant number, since it is smaller than the sum of its proper divisors (137108532).

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

66733260 is a wasteful number, since it uses less digits than its factorization.

66733260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101134 (or 101132 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 33.

The square root of 66733260 is about 8169.0427835824. The cubic root of 66733260 is about 405.6150994772.

The spelling of 66733260 in words is "sixty-six million, seven hundred thirty-three thousand, two hundred sixty".