7998145 has 8 divisors (see below), whose sum is σ = 10103040. Its totient is φ = 6061680.

The previous prime is 7998139. The next prime is 7998167. The reversal of 7998145 is 5418997.

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

It is not a de Polignac number, because 7998145 - 2¹¹ = 7996097 is a prime.

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, 42001 + ... + 42190.

It is an arithmetic number, because the mean of its divisors is an integer number (1262880).

Almost surely, 2^7998145 is an apocalyptic number.

It is an amenable number.

7998145 is a deficient number, since it is larger than the sum of its proper divisors (2104895).

7998145 is a wasteful number, since it uses less digits than its factorization.

7998145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84215.

The product of its digits is 90720, while the sum is 43.

The square root of 7998145 is about 2828.0991849651. The cubic root of 7998145 is about 199.9845404717.

The spelling of 7998145 in words is "seven million, nine hundred ninety-eight thousand, one hundred forty-five".