133456690 has 16 divisors (see below), whose sum is σ = 240604992. Its totient is φ = 53297584.

The previous prime is 133456679. The next prime is 133456691. The reversal of 133456690 is 96654331.

It is a super-2 number, since 2×133456690² = 35621376211512200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133456691) 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, 3844 + ... + 16783.

It is an arithmetic number, because the mean of its divisors is an integer number (15037812).

Almost surely, 2^133456690 is an apocalyptic number.

133456690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133456690 is a deficient number, since it is larger than the sum of its proper divisors (107148302).

133456690 is a wasteful number, since it uses less digits than its factorization.

133456690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21281.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 133456690 is about 11552.3456492610. The cubic root of 133456690 is about 511.0304553292.

The spelling of 133456690 in words is "one hundred thirty-three million, four hundred fifty-six thousand, six hundred ninety".