136898985 has 16 divisors (see below), whose sum is σ = 219824640. Its totient is φ = 72750720.

The previous prime is 136898981. The next prime is 136898989. The reversal of 136898985 is 589898631.

It is an interprime number because it is at equal distance from previous prime (136898981) and next prime (136898989).

It is not a de Polignac number, because 136898985 - 2² = 136898981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136898981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12025 + ... + 20454.

It is an arithmetic number, because the mean of its divisors is an integer number (13739040).

Almost surely, 2^136898985 is an apocalyptic number.

136898985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136898985 is a deficient number, since it is larger than the sum of its proper divisors (82925655).

136898985 is a wasteful number, since it uses less digits than its factorization.

136898985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32768.

The product of its digits is 3732480, while the sum is 57.

The square root of 136898985 is about 11700.3839680585. The cubic root of 136898985 is about 515.3869401709.

The spelling of 136898985 in words is "one hundred thirty-six million, eight hundred ninety-eight thousand, nine hundred eighty-five".