7108991 has 4 divisors (see below), whose sum is σ = 7122312. Its totient is φ = 7095672.

The previous prime is 7108979. The next prime is 7108993. The reversal of 7108991 is 1998017.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7108991 - 2¹⁰ = 7107967 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7108993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5825 + ... + 6938.

It is an arithmetic number, because the mean of its divisors is an integer number (1780578).

Almost surely, 2^7108991 is an apocalyptic number.

7108991 is a deficient number, since it is larger than the sum of its proper divisors (13321).

7108991 is a wasteful number, since it uses less digits than its factorization.

7108991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13320.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 7108991 is about 2666.2691161996. The cubic root of 7108991 is about 192.2808299997.

The spelling of 7108991 in words is "seven million, one hundred eight thousand, nine hundred ninety-one".