2668650813 has 16 divisors (see below), whose sum is σ = 3970830400. Its totient is φ = 1771327440.

The previous prime is 2668650799. The next prime is 2668650823. The reversal of 2668650813 is 3180568662.

2668650813 is a `hidden beast` number, since 2 + 66 + 86 + 508 + 1 + 3 = 666.

It is not a de Polignac number, because 2668650813 - 2⁴ = 2668650797 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 (2668650823) 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, 209623 + ... + 221988.

It is an arithmetic number, because the mean of its divisors is an integer number (248176900).

Almost surely, 2^2668650813 is an apocalyptic number.

It is an amenable number.

2668650813 is a deficient number, since it is larger than the sum of its proper divisors (1302179587).

2668650813 is a wasteful number, since it uses less digits than its factorization.

2668650813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431849 (or 431843 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 2668650813 is about 51658.9857914381. The cubic root of 2668650813 is about 1387.0663959925.

The spelling of 2668650813 in words is "two billion, six hundred sixty-eight million, six hundred fifty thousand, eight hundred thirteen".