133897085 has 32 divisors (see below), whose sum is σ = 194365440. Its totient is φ = 86501952.

The previous prime is 133897081. The next prime is 133897097. The reversal of 133897085 is 580798331.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 133897085 - 2² = 133897081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133897081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150512 + ... + 151398.

It is an arithmetic number, because the mean of its divisors is an integer number (6073920).

Almost surely, 2^133897085 is an apocalyptic number.

It is an amenable number.

133897085 is a deficient number, since it is larger than the sum of its proper divisors (60468355).

133897085 is a wasteful number, since it uses less digits than its factorization.

133897085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 133897085 is about 11571.3907979983. The cubic root of 133897085 is about 511.5919562332.

The spelling of 133897085 in words is "one hundred thirty-three million, eight hundred ninety-seven thousand, eighty-five".