133666460 has 24 divisors (see below), whose sum is σ = 282275280. Its totient is φ = 53166464.

The previous prime is 133666439. The next prime is 133666469. The reversal of 133666460 is 64666331.

It is a self number, because there is not a number n which added to its sum of digits gives 133666460.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133666469) 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, 15089 + ... + 22248.

It is an arithmetic number, because the mean of its divisors is an integer number (11761470).

Almost surely, 2^133666460 is an apocalyptic number.

133666460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133666460 is an abundant number, since it is smaller than the sum of its proper divisors (148608820).

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

133666460 is a wasteful number, since it uses less digits than its factorization.

133666460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37525 (or 37523 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 35.

The square root of 133666460 is about 11561.4211929157. The cubic root of 133666460 is about 511.2980645984.

The spelling of 133666460 in words is "one hundred thirty-three million, six hundred sixty-six thousand, four hundred sixty".