136783779 has 8 divisors (see below), whose sum is σ = 198958272. Its totient is φ = 82899240.

The previous prime is 136783769. The next prime is 136783789. The reversal of 136783779 is 977387631.

It is an interprime number because it is at equal distance from previous prime (136783769) and next prime (136783789).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136783779 - 2⁵ = 136783747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136783729) 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 7 ways as a sum of consecutive naturals, for example, 2072449 + ... + 2072514.

It is an arithmetic number, because the mean of its divisors is an integer number (24869784).

Almost surely, 2^136783779 is an apocalyptic number.

136783779 is a deficient number, since it is larger than the sum of its proper divisors (62174493).

136783779 is a wasteful number, since it uses less digits than its factorization.

136783779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4144977.

The product of its digits is 1333584, while the sum is 51.

The square root of 136783779 is about 11695.4597600949. The cubic root of 136783779 is about 515.2423266534.

The spelling of 136783779 in words is "one hundred thirty-six million, seven hundred eighty-three thousand, seven hundred seventy-nine".