136568873 has 4 divisors (see below), whose sum is σ = 156078720. Its totient is φ = 117059028.

The previous prime is 136568869. The next prime is 136568881. The reversal of 136568873 is 378865631.

It is a happy number.

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: 378865631 = 757 ⋅500483.

It is a cyclic number.

It is not a de Polignac number, because 136568873 - 2² = 136568869 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136568843) 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, 9754913 + ... + 9754926.

It is an arithmetic number, because the mean of its divisors is an integer number (39019680).

Almost surely, 2^136568873 is an apocalyptic number.

It is an amenable number.

136568873 is a deficient number, since it is larger than the sum of its proper divisors (19509847).

136568873 is an equidigital number, since it uses as much as digits as its factorization.

136568873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19509846.

The product of its digits is 725760, while the sum is 47.

The square root of 136568873 is about 11686.2685661421. The cubic root of 136568873 is about 514.9723465216.

The spelling of 136568873 in words is "one hundred thirty-six million, five hundred sixty-eight thousand, eight hundred seventy-three".