7971611 has 2 divisors, whose sum is σ = 7971612. Its totient is φ = 7971610.

The previous prime is 7971577. The next prime is 7971617. The reversal of 7971611 is 1161797.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7971611 - 2²² = 3777307 is a prime.

It is not a weakly prime, because it can be changed into another prime (7971617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3985805 + 3985806.

It is an arithmetic number, because the mean of its divisors is an integer number (3985806).

Almost surely, 2^7971611 is an apocalyptic number.

7971611 is a deficient number, since it is larger than the sum of its proper divisors (1).

7971611 is an equidigital number, since it uses as much as digits as its factorization.

7971611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2646, while the sum is 32.

The square root of 7971611 is about 2823.4041510205. The cubic root of 7971611 is about 199.7631446083.

The spelling of 7971611 in words is "seven million, nine hundred seventy-one thousand, six hundred eleven".