136571994 has 40 divisors (see below), whose sum is σ = 329567700. Its totient is φ = 42021504.

The previous prime is 136571993. The next prime is 136572031. The reversal of 136571994 is 499175631.

It can be written as a sum of positive squares in 2 ways, for example, as 129618225 + 6953769 = 11385^2 + 2637^2 .

It is not an unprimeable number, because it can be changed into a prime (136571993) 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 19 ways as a sum of consecutive naturals, for example, 30319 + ... + 34530.

Almost surely, 2^136571994 is an apocalyptic number.

136571994 is an abundant number, since it is smaller than the sum of its proper divisors (192995706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136571994 is a wasteful number, since it uses less digits than its factorization.

136571994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64876 (or 64867 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 136571994 is about 11686.4020981652. The cubic root of 136571994 is about 514.9762693687.

It can be divided in two parts, 13657 and 1994, that added together give a palindrome (15651).

The spelling of 136571994 in words is "one hundred thirty-six million, five hundred seventy-one thousand, nine hundred ninety-four".