135896985 has 96 divisors (see below), whose sum is σ = 281149440. Its totient is φ = 59439744.

The previous prime is 135896977. The next prime is 135896993. The reversal of 135896985 is 589698531.

It is a happy number.

135896985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (135896977) and next prime (135896993).

It is not a de Polignac number, because 135896985 - 2³ = 135896977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1069992 + ... + 1070118.

It is an arithmetic number, because the mean of its divisors is an integer number (2928640).

Almost surely, 2^135896985 is an apocalyptic number.

135896985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135896985 is an abundant number, since it is smaller than the sum of its proper divisors (145252455).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135896985 is a wasteful number, since it uses less digits than its factorization.

135896985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 264 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 54.

The square root of 135896985 is about 11657.4862213086. The cubic root of 135896985 is about 514.1264419158.

The spelling of 135896985 in words is "one hundred thirty-five million, eight hundred ninety-six thousand, nine hundred eighty-five".