7916643 has 16 divisors (see below), whose sum is σ = 13404160. Its totient is φ = 4523688.

The previous prime is 7916627. The next prime is 7916647. The reversal of 7916643 is 3466197.

7916643 is a `hidden beast` number, since 7 + 9 + 1 + 6 + 643 = 666.

7916643 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7916643 - 2⁴ = 7916627 is a prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 7916598 and 7916607.

It is not an unprimeable number, because it can be changed into a prime (7916647) 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, 20755 + ... + 21132.

It is an arithmetic number, because the mean of its divisors is an integer number (837760).

Almost surely, 2^7916643 is an apocalyptic number.

7916643 is a deficient number, since it is larger than the sum of its proper divisors (5487517).

7916643 is a wasteful number, since it uses less digits than its factorization.

7916643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41903 (or 41897 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 7916643 is about 2813.6529636755. The cubic root of 7916643 is about 199.3029316344.

The spelling of 7916643 in words is "seven million, nine hundred sixteen thousand, six hundred forty-three".