7001663 has 2 divisors, whose sum is σ = 7001664. Its totient is φ = 7001662.

The previous prime is 7001653. The next prime is 7001669. The reversal of 7001663 is 3661007.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7001663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7001669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3500831 + 3500832.

It is an arithmetic number, because the mean of its divisors is an integer number (3500832).

Almost surely, 2^7001663 is an apocalyptic number.

7001663 is a deficient number, since it is larger than the sum of its proper divisors (1).

7001663 is an equidigital number, since it uses as much as digits as its factorization.

7001663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 7001663 is about 2646.0655698603. The cubic root of 7001663 is about 191.3082656709.

The spelling of 7001663 in words is "seven million, one thousand, six hundred sixty-three".