2664260621 has 16 divisors (see below), whose sum is σ = 3176713728. Its totient is φ = 2206041600.

The previous prime is 2664260597. The next prime is 2664260623. The reversal of 2664260621 is 1260624662.

2664260621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2664260621 is a prime.

It is a super-2 number, since 2×2664260621² = 14196569313222611282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2664260623) 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, 224000 + ... + 235593.

It is an arithmetic number, because the mean of its divisors is an integer number (198544608).

Almost surely, 2^2664260621 is an apocalyptic number.

It is an amenable number.

2664260621 is a deficient number, since it is larger than the sum of its proper divisors (512453107).

2664260621 is a wasteful number, since it uses less digits than its factorization.

2664260621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459652.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 2664260621 is about 51616.4762551649. The cubic root of 2664260621 is about 1386.3053584814.

The spelling of 2664260621 in words is "two billion, six hundred sixty-four million, two hundred sixty thousand, six hundred twenty-one".