7643146772 has 6 divisors (see below), whose sum is σ = 13375506858. Its totient is φ = 3821573384.

The previous prime is 7643146769. The next prime is 7643146781. The reversal of 7643146772 is 2776413467.

It can be written as a sum of positive squares in only one way, i.e., 4228380676 + 3414766096 = 65026^2 + 58436^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 955393343 + ... + 955393350.

It is an arithmetic number, because the mean of its divisors is an integer number (2229251143).

Almost surely, 2^7643146772 is an apocalyptic number.

It is an amenable number.

7643146772 is a deficient number, since it is larger than the sum of its proper divisors (5732360086).

7643146772 is a wasteful number, since it uses less digits than its factorization.

7643146772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910786697 (or 1910786695 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 47.

The square root of 7643146772 is about 87425.0923476778. The cubic root of 7643146772 is about 1969.8087690899.

The spelling of 7643146772 in words is "seven billion, six hundred forty-three million, one hundred forty-six thousand, seven hundred seventy-two".