7936643 has 8 divisors (see below), whose sum is σ = 9324336. Its totient is φ = 6660000.

The previous prime is 7936631. The next prime is 7936667. The reversal of 7936643 is 3466397.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7936643 - 2¹⁰ = 7935619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7936597 and 7936606.

It is not an unprimeable number, because it can be changed into a prime (7936613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27608 + ... + 27893.

It is an arithmetic number, because the mean of its divisors is an integer number (1165542).

Almost surely, 2^7936643 is an apocalyptic number.

7936643 is a deficient number, since it is larger than the sum of its proper divisors (1387693).

7936643 is a wasteful number, since it uses less digits than its factorization.

7936643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55525.

The product of its digits is 81648, while the sum is 38.

The square root of 7936643 is about 2817.2048203849. The cubic root of 7936643 is about 199.4706250471.

The spelling of 7936643 in words is "seven million, nine hundred thirty-six thousand, six hundred forty-three".