66423360 has 56 divisors (see below), whose sum is σ = 210897216. Its totient is φ = 17712640.

The previous prime is 66423349. The next prime is 66423397. The reversal of 66423360 is 6332466.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33636 + ... + 35555.

Almost surely, 2^66423360 is an apocalyptic number.

66423360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66423360 is an abundant number, since it is smaller than the sum of its proper divisors (144473856).

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

66423360 is a wasteful number, since it uses less digits than its factorization.

66423360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69211 (or 69201 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 30.

The square root of 66423360 is about 8150.0527605654. The cubic root of 66423360 is about 404.9862516290.

The spelling of 66423360 in words is "sixty-six million, four hundred twenty-three thousand, three hundred sixty".