3646775879 has 4 divisors (see below), whose sum is σ = 3805331376. Its totient is φ = 3488220384.

The previous prime is 3646775857. The next prime is 3646775903. The reversal of 3646775879 is 9785776463.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3646775879 - 2²⁴ = 3629998663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3646775479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79277714 + ... + 79277759.

It is an arithmetic number, because the mean of its divisors is an integer number (951332844).

Almost surely, 2^3646775879 is an apocalyptic number.

3646775879 is a deficient number, since it is larger than the sum of its proper divisors (158555497).

3646775879 is a wasteful number, since it uses less digits than its factorization.

3646775879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158555496.

The product of its digits is 53343360, while the sum is 62.

The square root of 3646775879 is about 60388.5409577016. The cubic root of 3646775879 is about 1539.2282464400.

The spelling of 3646775879 in words is "three billion, six hundred forty-six million, seven hundred seventy-five thousand, eight hundred seventy-nine".