133663560 has 32 divisors (see below), whose sum is σ = 400991040. Its totient is φ = 35643584.

The previous prime is 133663559. The next prime is 133663561. The reversal of 133663560 is 65366331.

133663560 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (133663559) and next prime (133663561).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (133663561) 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, 556812 + ... + 557051.

It is an arithmetic number, because the mean of its divisors is an integer number (12530970).

Almost surely, 2^133663560 is an apocalyptic number.

133663560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133663560 is an abundant number, since it is smaller than the sum of its proper divisors (267327480).

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

133663560 is a wasteful number, since it uses less digits than its factorization.

133663560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113877 (or 1113873 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 33.

The square root of 133663560 is about 11561.2957751283. The cubic root of 133663560 is about 511.2943668991.

The spelling of 133663560 in words is "one hundred thirty-three million, six hundred sixty-three thousand, five hundred sixty".