136779782 has 4 divisors (see below), whose sum is σ = 205169676. Its totient is φ = 68389890.

The previous prime is 136779757. The next prime is 136779899. The reversal of 136779782 is 287977631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 287977631 = 31 ⋅9289601.

It is a self number, because there is not a number n which added to its sum of digits gives 136779782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34194944 + ... + 34194947.

It is an arithmetic number, because the mean of its divisors is an integer number (51292419).

Almost surely, 2^136779782 is an apocalyptic number.

136779782 is a deficient number, since it is larger than the sum of its proper divisors (68389894).

136779782 is an equidigital number, since it uses as much as digits as its factorization.

136779782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68389893.

The product of its digits is 889056, while the sum is 50.

The square root of 136779782 is about 11695.2888805707. The cubic root of 136779782 is about 515.2373079208.

The spelling of 136779782 in words is "one hundred thirty-six million, seven hundred seventy-nine thousand, seven hundred eighty-two".