135874665 has 28 divisors (see below), whose sum is σ = 244469124. Its totient is φ = 72464544.

The previous prime is 135874663. The next prime is 135874667. The reversal of 135874665 is 566478531.

135874665 is a `hidden beast` number, since 1 + 3 + 587 + 4 + 6 + 65 = 666.

It is an interprime number because it is at equal distance from previous prime (135874663) and next prime (135874667).

It can be written as a sum of positive squares in 2 ways, for example, as 15116544 + 120758121 = 3888^2 + 10989^2 .

It is not a de Polignac number, because 135874665 - 2¹ = 135874663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 135874665.

It is not an unprimeable number, because it can be changed into a prime (135874663) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 14994 + ... + 22283.

Almost surely, 2^135874665 is an apocalyptic number.

135874665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135874665 is a deficient number, since it is larger than the sum of its proper divisors (108594459).

135874665 is an frugal number, since it uses more digits than its factorization.

135874665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37300 (or 37285 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 135874665 is about 11656.5288572542. The cubic root of 135874665 is about 514.0982933137.

The spelling of 135874665 in words is "one hundred thirty-five million, eight hundred seventy-four thousand, six hundred sixty-five".