136220651 has 16 divisors (see below), whose sum is σ = 163081728. Its totient is φ = 111249600.

The previous prime is 136220647. The next prime is 136220659. The reversal of 136220651 is 156022631.

It is not a de Polignac number, because 136220651 - 2² = 136220647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136220651.

It is not an unprimeable number, because it can be changed into a prime (136220659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43736 + ... + 46746.

It is an arithmetic number, because the mean of its divisors is an integer number (10192608).

Almost surely, 2^136220651 is an apocalyptic number.

136220651 is a deficient number, since it is larger than the sum of its proper divisors (26861077).

136220651 is a wasteful number, since it uses less digits than its factorization.

136220651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 136220651 is about 11671.3602891865. The cubic root of 136220651 is about 514.5342834738.

The spelling of 136220651 in words is "one hundred thirty-six million, two hundred twenty thousand, six hundred fifty-one".