2684765663 has 4 divisors (see below), whose sum is σ = 2695212480. Its totient is φ = 2674318848.

The previous prime is 2684765659. The next prime is 2684765687. The reversal of 2684765663 is 3665674862.

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 2684765663 - 2² = 2684765659 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 (2684765263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5223023 + ... + 5223536.

It is an arithmetic number, because the mean of its divisors is an integer number (673803120).

Almost surely, 2^2684765663 is an apocalyptic number.

2684765663 is a deficient number, since it is larger than the sum of its proper divisors (10446817).

2684765663 is a wasteful number, since it uses less digits than its factorization.

2684765663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10446816.

The product of its digits is 8709120, while the sum is 53.

The square root of 2684765663 is about 51814.7243840976. The cubic root of 2684765663 is about 1389.8527634186.

The spelling of 2684765663 in words is "two billion, six hundred eighty-four million, seven hundred sixty-five thousand, six hundred sixty-three".