16864937 has 2 divisors, whose sum is σ = 16864938. Its totient is φ = 16864936.

The previous prime is 16864927. The next prime is 16864943. The reversal of 16864937 is 73946861.

16864937 is nontrivially palindromic in base 12.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12880921 + 3984016 = 3589^2 + 1996^2 .

It is a cyclic number.

It is not a de Polignac number, because 16864937 - 2⁶ = 16864873 is a prime.

It is a super-2 number, since 2×16864937² = 568852200027938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16864907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8432468 + 8432469.

It is an arithmetic number, because the mean of its divisors is an integer number (8432469).

Almost surely, 2^16864937 is an apocalyptic number.

It is an amenable number.

16864937 is a deficient number, since it is larger than the sum of its proper divisors (1).

16864937 is an equidigital number, since it uses as much as digits as its factorization.

16864937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 16864937 is about 4106.6941692802. The cubic root of 16864937 is about 256.4453967141.

The spelling of 16864937 in words is "sixteen million, eight hundred sixty-four thousand, nine hundred thirty-seven".