7164991 has 8 divisors (see below), whose sum is σ = 7291440. Its totient is φ = 7039872.

The previous prime is 7164953. The next prime is 7165003. The reversal of 7164991 is 1994617.

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

It is a cyclic number.

It is not a de Polignac number, because 7164991 - 2⁷ = 7164863 is a prime.

It is a Duffinian number.

7164991 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7164991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7164931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18225 + ... + 18613.

It is an arithmetic number, because the mean of its divisors is an integer number (911430).

Almost surely, 2^7164991 is an apocalyptic number.

7164991 is a deficient number, since it is larger than the sum of its proper divisors (126449).

7164991 is a wasteful number, since it uses less digits than its factorization.

7164991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665.

The product of its digits is 13608, while the sum is 37.

The square root of 7164991 is about 2676.7500817222. The cubic root of 7164991 is about 192.7843977520.

The spelling of 7164991 in words is "seven million, one hundred sixty-four thousand, nine hundred ninety-one".