7968091 has 4 divisors (see below), whose sum is σ = 7976800. Its totient is φ = 7959384.

The previous prime is 7968043. The next prime is 7968101. The reversal of 7968091 is 1908697.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7968091 - 2⁷ = 7967963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7968001) 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, 2796 + ... + 4873.

It is an arithmetic number, because the mean of its divisors is an integer number (1994200).

Almost surely, 2^7968091 is an apocalyptic number.

7968091 is a deficient number, since it is larger than the sum of its proper divisors (8709).

7968091 is a wasteful number, since it uses less digits than its factorization.

7968091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8708.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 7968091 is about 2822.7807212038. The cubic root of 7968091 is about 199.7337373450.

The spelling of 7968091 in words is "seven million, nine hundred sixty-eight thousand, ninety-one".