7998747 has 16 divisors (see below), whose sum is σ = 10966560. Its totient is φ = 5184000.

The previous prime is 7998743. The next prime is 7998763. The reversal of 7998747 is 7478997.

7998747 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7998747 - 2² = 7998743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7998747.

It is not an unprimeable number, because it can be changed into a prime (7998743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19747 + ... + 20147.

It is an arithmetic number, because the mean of its divisors is an integer number (685410).

Almost surely, 2^7998747 is an apocalyptic number.

7998747 is a deficient number, since it is larger than the sum of its proper divisors (2967813).

7998747 is a wasteful number, since it uses less digits than its factorization.

7998747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574.

The product of its digits is 889056, while the sum is 51.

The square root of 7998747 is about 2828.2056148731. The cubic root of 7998747 is about 199.9895577881.

The spelling of 7998747 in words is "seven million, nine hundred ninety-eight thousand, seven hundred forty-seven".