133355693 has 2 divisors, whose sum is σ = 133355694. Its totient is φ = 133355692.

The previous prime is 133355687. The next prime is 133355711. The reversal of 133355693 is 396553331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131171209 + 2184484 = 11453^2 + 1478^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133355693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133355603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66677846 + 66677847.

It is an arithmetic number, because the mean of its divisors is an integer number (66677847).

Almost surely, 2^133355693 is an apocalyptic number.

It is an amenable number.

133355693 is a deficient number, since it is larger than the sum of its proper divisors (1).

133355693 is an equidigital number, since it uses as much as digits as its factorization.

133355693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 109350, while the sum is 38.

The square root of 133355693 is about 11547.9735451723. The cubic root of 133355693 is about 510.9015107053.

The spelling of 133355693 in words is "one hundred thirty-three million, three hundred fifty-five thousand, six hundred ninety-three".