7632743661 has 24 divisors (see below), whose sum is σ = 11187015840. Its totient is φ = 5014074336.

The previous prime is 7632743641. The next prime is 7632743687. The reversal of 7632743661 is 1663472367.

7632743661 is a `hidden beast` number, since 7 + 632 + 7 + 4 + 3 + 6 + 6 + 1 = 666.

It is not a de Polignac number, because 7632743661 - 2¹⁵ = 7632710893 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7632743611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 277450 + ... + 303716.

It is an arithmetic number, because the mean of its divisors is an integer number (466125660).

Almost surely, 2^7632743661 is an apocalyptic number.

It is an amenable number.

7632743661 is a deficient number, since it is larger than the sum of its proper divisors (3554272179).

7632743661 is a wasteful number, since it uses less digits than its factorization.

7632743661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26745 (or 26742 counting only the distinct ones).

The product of its digits is 762048, while the sum is 45.

The square root of 7632743661 is about 87365.5748049539. The cubic root of 7632743661 is about 1968.9146590142.

The spelling of 7632743661 in words is "seven billion, six hundred thirty-two million, seven hundred forty-three thousand, six hundred sixty-one".