135665283 has 8 divisors (see below), whose sum is σ = 194801488. Its totient is φ = 83486304.

The previous prime is 135665279. The next prime is 135665291. The reversal of 135665283 is 382566531.

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

It is not a de Polignac number, because 135665283 - 2² = 135665279 is a prime.

It is a super-2 number, since 2×135665283² = 36810138022940178, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 3478597 = 135665283 / (1 + 3 + 5 + 6 + 6 + 5 + 2 + 8 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135665183) 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, 1739260 + ... + 1739337.

It is an arithmetic number, because the mean of its divisors is an integer number (24350186).

Almost surely, 2^135665283 is an apocalyptic number.

135665283 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

135665283 is a deficient number, since it is larger than the sum of its proper divisors (59136205).

135665283 is a wasteful number, since it uses less digits than its factorization.

135665283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3478613.

The product of its digits is 129600, while the sum is 39.

The square root of 135665283 is about 11647.5440758986. The cubic root of 135665283 is about 513.8340834784.

It can be divided in two parts, 13566528 and 3, that added together give a palindrome (13566531).

The spelling of 135665283 in words is "one hundred thirty-five million, six hundred sixty-five thousand, two hundred eighty-three".