136864405 has 8 divisors (see below), whose sum is σ = 164301984. Its totient is φ = 109448400.

The previous prime is 136864363. The next prime is 136864447. The reversal of 136864405 is 504468631.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (136864363) and next prime (136864447).

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

It is not a de Polignac number, because 136864405 - 2²¹ = 134767253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17110 + ... + 23800.

It is an arithmetic number, because the mean of its divisors is an integer number (20537748).

Almost surely, 2^136864405 is an apocalyptic number.

It is an amenable number.

136864405 is a deficient number, since it is larger than the sum of its proper divisors (27437579).

136864405 is an equidigital number, since it uses as much as digits as its factorization.

136864405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10787.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 136864405 is about 11698.9061454480. The cubic root of 136864405 is about 515.3435417942.

The spelling of 136864405 in words is "one hundred thirty-six million, eight hundred sixty-four thousand, four hundred five".