7091663 has 2 divisors, whose sum is σ = 7091664. Its totient is φ = 7091662.

The previous prime is 7091633. The next prime is 7091671. The reversal of 7091663 is 3661907.

It is a strong prime.

It is an emirp because it is prime and its reverse (3661907) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7091663 - 2⁶ = 7091599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7091633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3545831 + 3545832.

It is an arithmetic number, because the mean of its divisors is an integer number (3545832).

Almost surely, 2^7091663 is an apocalyptic number.

7091663 is a deficient number, since it is larger than the sum of its proper divisors (1).

7091663 is an equidigital number, since it uses as much as digits as its factorization.

7091663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 7091663 is about 2663.0176492093. The cubic root of 7091663 is about 192.1244762129.

The spelling of 7091663 in words is "seven million, ninety-one thousand, six hundred sixty-three".