2664266761 has 4 divisors (see below), whose sum is σ = 2869210372. Its totient is φ = 2459323152.

The previous prime is 2664266747. The next prime is 2664266767. The reversal of 2664266761 is 1676624662.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1751924736 + 912342025 = 41856^2 + 30205^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2664266761 is a prime.

It is a super-2 number, since 2×2664266761² = 14196634747538862242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2664266767) 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, 102471786 + ... + 102471811.

It is an arithmetic number, because the mean of its divisors is an integer number (717302593).

Almost surely, 2^2664266761 is an apocalyptic number.

It is an amenable number.

2664266761 is a deficient number, since it is larger than the sum of its proper divisors (204943611).

2664266761 is a wasteful number, since it uses less digits than its factorization.

2664266761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204943610.

The product of its digits is 870912, while the sum is 46.

The square root of 2664266761 is about 51616.5357322632. The cubic root of 2664266761 is about 1386.3064234308.

The spelling of 2664266761 in words is "two billion, six hundred sixty-four million, two hundred sixty-six thousand, seven hundred sixty-one".