7998805 has 8 divisors (see below), whose sum is σ = 9648000. Its totient is φ = 6366096.

The previous prime is 7998803. The next prime is 7998827. The reversal of 7998805 is 5088997.

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 7998805 - 2¹ = 7998803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7998803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3025 + ... + 5014.

It is an arithmetic number, because the mean of its divisors is an integer number (1206000).

Almost surely, 2^7998805 is an apocalyptic number.

It is an amenable number.

7998805 is a deficient number, since it is larger than the sum of its proper divisors (1649195).

7998805 is a wasteful number, since it uses less digits than its factorization.

7998805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8243.

The product of its (nonzero) digits is 181440, while the sum is 46.

The square root of 7998805 is about 2828.2158687059. The cubic root of 7998805 is about 199.9900411708.

It can be divided in two parts, 799 and 8805, that added together give a square (9604 = 98²).

The spelling of 7998805 in words is "seven million, nine hundred ninety-eight thousand, eight hundred five".