3668786779 has 16 divisors (see below), whose sum is σ = 4673203200. Its totient is φ = 2803918464.

The previous prime is 3668786749. The next prime is 3668786783. The reversal of 3668786779 is 9776878663.

It is not a de Polignac number, because 3668786779 - 2¹³ = 3668778587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3668786749) 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, 809059 + ... + 813580.

It is an arithmetic number, because the mean of its divisors is an integer number (292075200).

Almost surely, 2^3668786779 is an apocalyptic number.

3668786779 is a deficient number, since it is larger than the sum of its proper divisors (1004416421).

3668786779 is a wasteful number, since it uses less digits than its factorization.

3668786779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622682.

The product of its digits is 128024064, while the sum is 67.

The square root of 3668786779 is about 60570.5108035255. The cubic root of 3668786779 is about 1542.3188178416.

The spelling of 3668786779 in words is "three billion, six hundred sixty-eight million, seven hundred eighty-six thousand, seven hundred seventy-nine".