136778763 has 12 divisors (see below), whose sum is σ = 200458664. Its totient is φ = 82896000.

The previous prime is 136778737. The next prime is 136778773. The reversal of 136778763 is 367877631.

It is a happy number.

It is not a de Polignac number, because 136778763 - 2¹² = 136774667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136778773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188038 + ... + 188763.

Almost surely, 2^136778763 is an apocalyptic number.

136778763 is a deficient number, since it is larger than the sum of its proper divisors (63679901).

136778763 is a wasteful number, since it uses less digits than its factorization.

136778763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376826 (or 376815 counting only the distinct ones).

The product of its digits is 889056, while the sum is 48.

The square root of 136778763 is about 11695.2453159393. The cubic root of 136778763 is about 515.2360284234.

It can be divided in two parts, 13 and 6778763, that added together give a palindrome (6778776).

The spelling of 136778763 in words is "one hundred thirty-six million, seven hundred seventy-eight thousand, seven hundred sixty-three".