136570247 has 4 divisors (see below), whose sum is σ = 148985736. Its totient is φ = 124154760.

The previous prime is 136570243. The next prime is 136570267. The reversal of 136570247 is 742075631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 136570247 - 2² = 136570243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136570243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6207728 + ... + 6207749.

It is an arithmetic number, because the mean of its divisors is an integer number (37246434).

Almost surely, 2^136570247 is an apocalyptic number.

136570247 is a deficient number, since it is larger than the sum of its proper divisors (12415489).

136570247 is a wasteful number, since it uses less digits than its factorization.

136570247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12415488.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 136570247 is about 11686.3273529368. The cubic root of 136570247 is about 514.9740735369.

The spelling of 136570247 in words is "one hundred thirty-six million, five hundred seventy thousand, two hundred forty-seven".