7321406563 has 2 divisors, whose sum is σ = 7321406564. Its totient is φ = 7321406562.

The previous prime is 7321406539. The next prime is 7321406569. The reversal of 7321406563 is 3656041237.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7321406563 - 2²¹ = 7319309411 is a prime.

It is not a weakly prime, because it can be changed into another prime (7321406569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3660703281 + 3660703282.

It is an arithmetic number, because the mean of its divisors is an integer number (3660703282).

Almost surely, 2^7321406563 is an apocalyptic number.

7321406563 is a deficient number, since it is larger than the sum of its proper divisors (1).

7321406563 is an equidigital number, since it uses as much as digits as its factorization.

7321406563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 7321406563 is about 85565.2181847274. The cubic root of 7321406563 is about 1941.7717334670.

The spelling of 7321406563 in words is "seven billion, three hundred twenty-one million, four hundred six thousand, five hundred sixty-three".