133355690 has 32 divisors (see below), whose sum is σ = 259701120. Its totient is φ = 49011264.

The previous prime is 133355687. The next prime is 133355693. The reversal of 133355690 is 96553331.

It is an interprime number because it is at equal distance from previous prime (133355687) and next prime (133355693).

It is a super-2 number, since 2×133355690² = 35567480110752200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 133355690.

It is not an unprimeable number, because it can be changed into a prime (133355693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27251 + ... + 31769.

It is an arithmetic number, because the mean of its divisors is an integer number (8115660).

Almost surely, 2^133355690 is an apocalyptic number.

133355690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133355690 is a deficient number, since it is larger than the sum of its proper divisors (126345430).

133355690 is a wasteful number, since it uses less digits than its factorization.

133355690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4766.

The product of its (nonzero) digits is 36450, while the sum is 35.

The square root of 133355690 is about 11547.9734152794. The cubic root of 133355690 is about 510.9015068742.

The spelling of 133355690 in words is "one hundred thirty-three million, three hundred fifty-five thousand, six hundred ninety".