8670643652 has 18 divisors (see below), whose sum is σ = 16678449774. Its totient is φ = 3941201440.

The previous prime is 8670643649. The next prime is 8670643669. The reversal of 8670643652 is 2563460768.

It can be written as a sum of positive squares in only one way, i.e., 8183735296 + 486908356 = 90464^2 + 22066^2 .

It is a super-2 number, since 2×8670643652² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8670643597 and 8670643606.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8956793 + ... + 8957760.

It is an arithmetic number, because the mean of its divisors is an integer number (926580543).

Almost surely, 2^8670643652 is an apocalyptic number.

It is an amenable number.

8670643652 is a deficient number, since it is larger than the sum of its proper divisors (8007806122).

8670643652 is a wasteful number, since it uses less digits than its factorization.

8670643652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17914579 (or 17914566 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 47.

The square root of 8670643652 is about 93116.2910129049. The cubic root of 8670643652 is about 2054.3941952882.

The spelling of 8670643652 in words is "eight billion, six hundred seventy million, six hundred forty-three thousand, six hundred fifty-two".