136898693 has 4 divisors (see below), whose sum is σ = 137053920. Its totient is φ = 136743468.

The previous prime is 136898681. The next prime is 136898711. The reversal of 136898693 is 396898631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 396898631 = 107 ⋅3709333.

It is not a de Polignac number, because 136898693 - 2¹⁶ = 136833157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136898633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76283 + ... + 78056.

It is an arithmetic number, because the mean of its divisors is an integer number (34263480).

Almost surely, 2^136898693 is an apocalyptic number.

It is an amenable number.

136898693 is a deficient number, since it is larger than the sum of its proper divisors (155227).

136898693 is an equidigital number, since it uses as much as digits as its factorization.

136898693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155226.

The product of its digits is 1679616, while the sum is 53.

The square root of 136898693 is about 11700.3714898289. The cubic root of 136898693 is about 515.3865737375.

The spelling of 136898693 in words is "one hundred thirty-six million, eight hundred ninety-eight thousand, six hundred ninety-three".