133699651 has 2 divisors, whose sum is σ = 133699652. Its totient is φ = 133699650.

The previous prime is 133699649. The next prime is 133699661. The reversal of 133699651 is 156996331.

It is a weak prime.

It is an emirp because it is prime and its reverse (156996331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133699651 - 2¹ = 133699649 is a prime.

Together with 133699649, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 133699598 and 133699607.

It is not a weakly prime, because it can be changed into another prime (133699661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66849825 + 66849826.

It is an arithmetic number, because the mean of its divisors is an integer number (66849826).

Almost surely, 2^133699651 is an apocalyptic number.

133699651 is a deficient number, since it is larger than the sum of its proper divisors (1).

133699651 is an equidigital number, since it uses as much as digits as its factorization.

133699651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131220, while the sum is 43.

The square root of 133699651 is about 11562.8565242331. The cubic root of 133699651 is about 511.3403815954.

The spelling of 133699651 in words is "one hundred thirty-three million, six hundred ninety-nine thousand, six hundred fifty-one".