136857783 has 16 divisors (see below), whose sum is σ = 189793280. Its totient is φ = 87643296.

The previous prime is 136857781. The next prime is 136857827. The reversal of 136857783 is 387758631.

It is not a de Polignac number, because 136857783 - 2¹ = 136857781 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136857781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 966 + ... + 16572.

It is an arithmetic number, because the mean of its divisors is an integer number (11862080).

Almost surely, 2^136857783 is an apocalyptic number.

136857783 is a deficient number, since it is larger than the sum of its proper divisors (52935497).

136857783 is a wasteful number, since it uses less digits than its factorization.

136857783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15726.

The product of its digits is 846720, while the sum is 48.

The square root of 136857783 is about 11698.6231241117. The cubic root of 136857783 is about 515.3352302589.

The spelling of 136857783 in words is "one hundred thirty-six million, eight hundred fifty-seven thousand, seven hundred eighty-three".