16398667 has 2 divisors, whose sum is σ = 16398668. Its totient is φ = 16398666.

The previous prime is 16398649. The next prime is 16398671. The reversal of 16398667 is 76689361.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16398667 is a prime.

It is not a weakly prime, because it can be changed into another prime (16398607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8199333 + 8199334.

It is an arithmetic number, because the mean of its divisors is an integer number (8199334).

Almost surely, 2^16398667 is an apocalyptic number.

16398667 is a deficient number, since it is larger than the sum of its proper divisors (1).

16398667 is an equidigital number, since it uses as much as digits as its factorization.

16398667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 46.

The square root of 16398667 is about 4049.5267624748. The cubic root of 16398667 is about 254.0599348097.

The spelling of 16398667 in words is "sixteen million, three hundred ninety-eight thousand, six hundred sixty-seven".