136720199 has 48 divisors (see below), whose sum is σ = 183042048. Its totient is φ = 99792000.

The previous prime is 136720151. The next prime is 136720201. The reversal of 136720199 is 991027631.

It is a happy number.

It is not a de Polignac number, because 136720199 - 2²⁰ = 135671623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136720139) 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 47 ways as a sum of consecutive naturals, for example, 1076474 + ... + 1076600.

It is an arithmetic number, because the mean of its divisors is an integer number (3813376).

Almost surely, 2^136720199 is an apocalyptic number.

136720199 is a deficient number, since it is larger than the sum of its proper divisors (46321849).

136720199 is a wasteful number, since it uses less digits than its factorization.

136720199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 136720199 is about 11692.7412953507. The cubic root of 136720199 is about 515.1624824292.

The spelling of 136720199 in words is "one hundred thirty-six million, seven hundred twenty thousand, one hundred ninety-nine".