7106991 has 4 divisors (see below), whose sum is σ = 9475992. Its totient is φ = 4737992.

The previous prime is 7106987. The next prime is 7106999. The reversal of 7106991 is 1996017.

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 7106991 - 2² = 7106987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7106999) 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, 1184496 + ... + 1184501.

It is an arithmetic number, because the mean of its divisors is an integer number (2368998).

Almost surely, 2^7106991 is an apocalyptic number.

7106991 is a deficient number, since it is larger than the sum of its proper divisors (2369001).

7106991 is a wasteful number, since it uses less digits than its factorization.

7106991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2369000.

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 7106991 is about 2665.8940339031. The cubic root of 7106991 is about 192.2627966047.

The spelling of 7106991 in words is "seven million, one hundred six thousand, nine hundred ninety-one".