7992643 has 4 divisors (see below), whose sum is σ = 8066080. Its totient is φ = 7919208.

The previous prime is 7992619. The next prime is 7992659. The reversal of 7992643 is 3462997.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7992643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7992596 and 7992605.

It is not an unprimeable number, because it can be changed into a prime (7992613) 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, 36555 + ... + 36772.

It is an arithmetic number, because the mean of its divisors is an integer number (2016520).

Almost surely, 2^7992643 is an apocalyptic number.

7992643 is a deficient number, since it is larger than the sum of its proper divisors (73437).

7992643 is a wasteful number, since it uses less digits than its factorization.

7992643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73436.

The product of its digits is 81648, while the sum is 40.

The square root of 7992643 is about 2827.1262794576. The cubic root of 7992643 is about 199.9386728635.

The spelling of 7992643 in words is "seven million, nine hundred ninety-two thousand, six hundred forty-three".