7993643 has 4 divisors (see below), whose sum is σ = 9135600. Its totient is φ = 6851688.

The previous prime is 7993577. The next prime is 7993651. The reversal of 7993643 is 3463997.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3463997 = 101 ⋅34297.

It is a cyclic number.

It is not a de Polignac number, because 7993643 - 2¹⁰ = 7992619 is a prime.

It is a super-2 number, since 2×7993643² = 127796656822898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7993643.

It is not an unprimeable number, because it can be changed into a prime (7993663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570968 + ... + 570981.

It is an arithmetic number, because the mean of its divisors is an integer number (2283900).

Almost surely, 2^7993643 is an apocalyptic number.

7993643 is a deficient number, since it is larger than the sum of its proper divisors (1141957).

7993643 is a wasteful number, since it uses less digits than its factorization.

7993643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141956.

The product of its digits is 122472, while the sum is 41.

The square root of 7993643 is about 2827.3031319616. The cubic root of 7993643 is about 199.9470109620.

The spelling of 7993643 in words is "seven million, nine hundred ninety-three thousand, six hundred forty-three".