133685670 has 16 divisors (see below), whose sum is σ = 320845680. Its totient is φ = 35649504.

The previous prime is 133685633. The next prime is 133685677. The reversal of 133685670 is 76586331.

133685670 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133685677) 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, 2228065 + ... + 2228124.

It is an arithmetic number, because the mean of its divisors is an integer number (20052855).

Almost surely, 2^133685670 is an apocalyptic number.

133685670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133685670 is an abundant number, since it is smaller than the sum of its proper divisors (187160010).

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

133685670 is a wasteful number, since it uses less digits than its factorization.

133685670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4456199.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 133685670 is about 11562.2519432851. The cubic root of 133685670 is about 511.3225573178.

The spelling of 133685670 in words is "one hundred thirty-three million, six hundred eighty-five thousand, six hundred seventy".