7191641 has 2 divisors, whose sum is σ = 7191642. Its totient is φ = 7191640.

The previous prime is 7191601. The next prime is 7191647. The reversal of 7191641 is 1461917.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5290000 + 1901641 = 2300^2 + 1379^2 .

It is a cyclic number.

It is not a de Polignac number, because 7191641 - 2¹⁸ = 6929497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7191647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3595820 + 3595821.

It is an arithmetic number, because the mean of its divisors is an integer number (3595821).

Almost surely, 2^7191641 is an apocalyptic number.

It is an amenable number.

7191641 is a deficient number, since it is larger than the sum of its proper divisors (1).

7191641 is an equidigital number, since it uses as much as digits as its factorization.

7191641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 29.

The square root of 7191641 is about 2681.7235129670. The cubic root of 7191641 is about 193.0231208933.

The spelling of 7191641 in words is "seven million, one hundred ninety-one thousand, six hundred forty-one".