133646897 has 8 divisors (see below), whose sum is σ = 136776576. Its totient is φ = 130529232.

The previous prime is 133646879. The next prime is 133646917. The reversal of 133646897 is 798646331.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133646897 - 2⁶ = 133646833 is a prime.

It is a super-2 number, since 2×133646897² = 35722986155457218, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133646837) 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, 21863 + ... + 27299.

It is an arithmetic number, because the mean of its divisors is an integer number (17097072).

Almost surely, 2^133646897 is an apocalyptic number.

It is an amenable number.

133646897 is a deficient number, since it is larger than the sum of its proper divisors (3129679).

133646897 is an equidigital number, since it uses as much as digits as its factorization.

133646897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6007.

The product of its digits is 653184, while the sum is 47.

The square root of 133646897 is about 11560.5751154517. The cubic root of 133646897 is about 511.2731193926.

The spelling of 133646897 in words is "one hundred thirty-three million, six hundred forty-six thousand, eight hundred ninety-seven".