2663072261 has 4 divisors (see below), whose sum is σ = 2663251500. Its totient is φ = 2662893024.

The previous prime is 2663072207. The next prime is 2663072263. The reversal of 2663072261 is 1622703662.

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 602457025 + 2060615236 = 24545^2 + 45394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2663072261 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 (2663072263) 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, 65096 + ... + 97793.

It is an arithmetic number, because the mean of its divisors is an integer number (665812875).

Almost surely, 2^2663072261 is an apocalyptic number.

It is an amenable number.

2663072261 is a deficient number, since it is larger than the sum of its proper divisors (179239).

2663072261 is a wasteful number, since it uses less digits than its factorization.

2663072261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179238.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 2663072261 is about 51604.9635306527. The cubic root of 2663072261 is about 1386.0992131288.

The spelling of 2663072261 in words is "two billion, six hundred sixty-three million, seventy-two thousand, two hundred sixty-one".