135351665 has 24 divisors (see below), whose sum is σ = 173154240. Its totient is φ = 101376704.

The previous prime is 135351653. The next prime is 135351677. The reversal of 135351665 is 566153531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (135351653) and next prime (135351677).

It is not a de Polignac number, because 135351665 - 2⁸ = 135351409 is a prime.

Its product of digits (40500) is a multiple of the sum of its prime divisors (500).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 322826 + ... + 323244.

It is an arithmetic number, because the mean of its divisors is an integer number (7214760).

Almost surely, 2^135351665 is an apocalyptic number.

It is an amenable number.

135351665 is a deficient number, since it is larger than the sum of its proper divisors (37802575).

135351665 is an equidigital number, since it uses as much as digits as its factorization.

135351665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 500 counting only the distinct ones).

The product of its digits is 40500, while the sum is 35.

The square root of 135351665 is about 11634.0734482811. The cubic root of 135351665 is about 513.4378338534.

The spelling of 135351665 in words is "one hundred thirty-five million, three hundred fifty-one thousand, six hundred sixty-five".