136717873 has 4 divisors (see below), whose sum is σ = 137481840. Its totient is φ = 135953908.

The previous prime is 136717871. The next prime is 136717879. The reversal of 136717873 is 378717631.

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.

It is a cyclic number.

It is not a de Polignac number, because 136717873 - 2¹ = 136717871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136717871) 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, 381715 + ... + 382072.

It is an arithmetic number, because the mean of its divisors is an integer number (34370460).

Almost surely, 2^136717873 is an apocalyptic number.

It is an amenable number.

136717873 is a deficient number, since it is larger than the sum of its proper divisors (763967).

136717873 is an equidigital number, since it uses as much as digits as its factorization.

136717873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763966.

The product of its digits is 148176, while the sum is 43.

The square root of 136717873 is about 11692.6418315110. The cubic root of 136717873 is about 515.1595609523.

The spelling of 136717873 in words is "one hundred thirty-six million, seven hundred seventeen thousand, eight hundred seventy-three".