7982805 has 8 divisors (see below), whose sum is σ = 12772512. Its totient is φ = 4257488.

The previous prime is 7982797. The next prime is 7982851. The reversal of 7982805 is 5082897.

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 7982805 - 2³ = 7982797 is a prime.

It is an Ulam number.

7982805 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266079 + ... + 266108.

It is an arithmetic number, because the mean of its divisors is an integer number (1596564).

Almost surely, 2^7982805 is an apocalyptic number.

It is an amenable number.

7982805 is a deficient number, since it is larger than the sum of its proper divisors (4789707).

7982805 is a wasteful number, since it uses less digits than its factorization.

7982805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532195.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 7982805 is about 2825.3858143624. The cubic root of 7982805 is about 199.8566055481.

The spelling of 7982805 in words is "seven million, nine hundred eighty-two thousand, eight hundred five".