74005663 has 2 divisors, whose sum is σ = 74005664. Its totient is φ = 74005662.

The previous prime is 74005639. The next prime is 74005681. The reversal of 74005663 is 36650047.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74005663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74005363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37002831 + 37002832.

It is an arithmetic number, because the mean of its divisors is an integer number (37002832).

Almost surely, 2^74005663 is an apocalyptic number.

74005663 is a deficient number, since it is larger than the sum of its proper divisors (1).

74005663 is an equidigital number, since it uses as much as digits as its factorization.

74005663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 74005663 is about 8602.6544159347. The cubic root of 74005663 is about 419.8443546479.

The spelling of 74005663 in words is "seventy-four million, five thousand, six hundred sixty-three".