7998685 has 8 divisors (see below), whose sum is σ = 9619416. Its totient is φ = 6384960.

The previous prime is 7998673. The next prime is 7998691. The reversal of 7998685 is 5868997.

It can be written as a sum of positive squares in 4 ways, for example, as 80089 + 7918596 = 283^2 + 2814^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-7998685 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1227 + ... + 4183.

It is an arithmetic number, because the mean of its divisors is an integer number (1202427).

Almost surely, 2^7998685 is an apocalyptic number.

It is an amenable number.

7998685 is a deficient number, since it is larger than the sum of its proper divisors (1620731).

7998685 is a wasteful number, since it uses less digits than its factorization.

7998685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503.

The product of its digits is 1088640, while the sum is 52.

The square root of 7998685 is about 2828.1946538384. The cubic root of 7998685 is about 199.9890410662.

The spelling of 7998685 in words is "seven million, nine hundred ninety-eight thousand, six hundred eighty-five".