7111998 has 12 divisors (see below), whose sum is σ = 15409368. Its totient is φ = 2370660.

The previous prime is 7111997. The next prime is 7112003. The reversal of 7111998 is 8991117.

7111998 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7111997) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197538 + ... + 197573.

It is an arithmetic number, because the mean of its divisors is an integer number (1284114).

Almost surely, 2^7111998 is an apocalyptic number.

7111998 is an abundant number, since it is smaller than the sum of its proper divisors (8297370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7111998 is a wasteful number, since it uses less digits than its factorization.

7111998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395119 (or 395116 counting only the distinct ones).

The product of its digits is 4536, while the sum is 36.

The square root of 7111998 is about 2666.8329531487. The cubic root of 7111998 is about 192.3079368448.

It can be divided in two parts, 71119 and 98, that added together give a palindrome (71217).

The spelling of 7111998 in words is "seven million, one hundred eleven thousand, nine hundred ninety-eight".