16997963 has 2 divisors, whose sum is σ = 16997964. Its totient is φ = 16997962.

The previous prime is 16997957. The next prime is 16997993. The reversal of 16997963 is 36979961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16997963 - 2⁴ = 16997947 is a prime.

It is a super-2 number, since 2×16997963² = 577861492298738, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16997993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8498981 + 8498982.

It is an arithmetic number, because the mean of its divisors is an integer number (8498982).

Almost surely, 2^16997963 is an apocalyptic number.

16997963 is a deficient number, since it is larger than the sum of its proper divisors (1).

16997963 is an equidigital number, since it uses as much as digits as its factorization.

16997963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 551124, while the sum is 50.

The square root of 16997963 is about 4122.8585956833. The cubic root of 16997963 is about 257.1178886544.

The spelling of 16997963 in words is "sixteen million, nine hundred ninety-seven thousand, nine hundred sixty-three".