133270661 has 2 divisors, whose sum is σ = 133270662. Its totient is φ = 133270660.

The previous prime is 133270651. The next prime is 133270663. The reversal of 133270661 is 166072331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99700225 + 33570436 = 9985^2 + 5794^2 .

It is a cyclic number.

It is not a de Polignac number, because 133270661 - 2²² = 129076357 is a prime.

It is a super-2 number, since 2×133270661² = 35522138166753842, which contains 22 as substring.

Together with 133270663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133270663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66635330 + 66635331.

It is an arithmetic number, because the mean of its divisors is an integer number (66635331).

Almost surely, 2^133270661 is an apocalyptic number.

It is an amenable number.

133270661 is a deficient number, since it is larger than the sum of its proper divisors (1).

133270661 is an equidigital number, since it uses as much as digits as its factorization.

133270661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 133270661 is about 11544.2912731791. The cubic root of 133270661 is about 510.7928983841.

The spelling of 133270661 in words is "one hundred thirty-three million, two hundred seventy thousand, six hundred sixty-one".