2261772766 has 32 divisors (see below), whose sum is σ = 3726011520. Its totient is φ = 1021183200.

The previous prime is 2261772761. The next prime is 2261772791. The reversal of 2261772766 is 6672771622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261772761) 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, 3653605 + ... + 3654223.

It is an arithmetic number, because the mean of its divisors is an integer number (116437860).

Almost surely, 2^2261772766 is an apocalyptic number.

2261772766 is a deficient number, since it is larger than the sum of its proper divisors (1464238754).

2261772766 is a wasteful number, since it uses less digits than its factorization.

2261772766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480.

The product of its digits is 592704, while the sum is 46.

The square root of 2261772766 is about 47558.0988476201. The cubic root of 2261772766 is about 1312.6521577913.

The spelling of 2261772766 in words is "two billion, two hundred sixty-one million, seven hundred seventy-two thousand, seven hundred sixty-six".