2661427732 has 12 divisors (see below), whose sum is σ = 4672380916. Its totient is φ = 1326461760.

The previous prime is 2661427721. The next prime is 2661427739. The reversal of 2661427732 is 2377241662.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 770395536 + 1891032196 = 27756^2 + 43486^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661427739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061619 + ... + 1064122.

Almost surely, 2^2661427732 is an apocalyptic number.

It is an amenable number.

2661427732 is a deficient number, since it is larger than the sum of its proper divisors (2010953184).

2661427732 is a wasteful number, since it uses less digits than its factorization.

2661427732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126058 (or 2126056 counting only the distinct ones).

The product of its digits is 169344, while the sum is 40.

The square root of 2661427732 is about 51589.0272441728. The cubic root of 2661427732 is about 1385.8138347504.

The spelling of 2661427732 in words is "two billion, six hundred sixty-one million, four hundred twenty-seven thousand, seven hundred thirty-two".