2664656063 has 4 divisors (see below), whose sum is σ = 2669771088. Its totient is φ = 2659541040.

The previous prime is 2664655991. The next prime is 2664656077. The reversal of 2664656063 is 3606564662.

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 2664656063 - 2¹⁶ = 2664590527 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 (2664656663) 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, 2556731 + ... + 2557772.

It is an arithmetic number, because the mean of its divisors is an integer number (667442772).

Almost surely, 2^2664656063 is an apocalyptic number.

2664656063 is a deficient number, since it is larger than the sum of its proper divisors (5115025).

2664656063 is an equidigital number, since it uses as much as digits as its factorization.

2664656063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5115024.

The product of its (nonzero) digits is 933120, while the sum is 44.

The square root of 2664656063 is about 51620.3066922311. The cubic root of 2664656063 is about 1386.3739423928.

The spelling of 2664656063 in words is "two billion, six hundred sixty-four million, six hundred fifty-six thousand, sixty-three".