16994963 has 4 divisors (see below), whose sum is σ = 17009328. Its totient is φ = 16980600.

The previous prime is 16994947. The next prime is 16994969. The reversal of 16994963 is 36949961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36949961 = 251 ⋅147211.

It is a cyclic number.

It is not a de Polignac number, because 16994963 - 2⁴ = 16994947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16994969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5231 + ... + 7832.

It is an arithmetic number, because the mean of its divisors is an integer number (4252332).

Almost surely, 2^16994963 is an apocalyptic number.

16994963 is a deficient number, since it is larger than the sum of its proper divisors (14365).

16994963 is a wasteful number, since it uses less digits than its factorization.

16994963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14364.

The product of its digits is 314928, while the sum is 47.

The square root of 16994963 is about 4122.4947543933. The cubic root of 16994963 is about 257.1027613703.

The spelling of 16994963 in words is "sixteen million, nine hundred ninety-four thousand, nine hundred sixty-three".