8561963 has 2 divisors, whose sum is σ = 8561964. Its totient is φ = 8561962.

The previous prime is 8561953. The next prime is 8562023. The reversal of 8561963 is 3691658.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8561963 - 2¹² = 8557867 is a prime.

It is not a weakly prime, because it can be changed into another prime (8561953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4280981 + 4280982.

It is an arithmetic number, because the mean of its divisors is an integer number (4280982).

Almost surely, 2^8561963 is an apocalyptic number.

8561963 is a deficient number, since it is larger than the sum of its proper divisors (1).

8561963 is an equidigital number, since it uses as much as digits as its factorization.

8561963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 38.

The square root of 8561963 is about 2926.0832182288. The cubic root of 8561963 is about 204.5774600303.

The spelling of 8561963 in words is "eight million, five hundred sixty-one thousand, nine hundred sixty-three".