945663659 has 2 divisors, whose sum is σ = 945663660. Its totient is φ = 945663658.

The previous prime is 945663643. The next prime is 945663671. The reversal of 945663659 is 956366549.

It is a strong prime.

It is an emirp because it is prime and its reverse (956366549) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 945663659 - 2⁴ = 945663643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 945663659.

It is not a weakly prime, because it can be changed into another prime (945663619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472831829 + 472831830.

It is an arithmetic number, because the mean of its divisors is an integer number (472831830).

Almost surely, 2^945663659 is an apocalyptic number.

945663659 is a deficient number, since it is larger than the sum of its proper divisors (1).

945663659 is an equidigital number, since it uses as much as digits as its factorization.

945663659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5248800, while the sum is 53.

The square root of 945663659 is about 30751.6448177980. The cubic root of 945663659 is about 981.5495612687.

The spelling of 945663659 in words is "nine hundred forty-five million, six hundred sixty-three thousand, six hundred fifty-nine".