16066639 has 2 divisors, whose sum is σ = 16066640. Its totient is φ = 16066638.

The previous prime is 16066619. The next prime is 16066651. The reversal of 16066639 is 93666061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16066639 - 2²³ = 7678031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16066598 and 16066607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16066619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8033319 + 8033320.

It is an arithmetic number, because the mean of its divisors is an integer number (8033320).

Almost surely, 2^16066639 is an apocalyptic number.

16066639 is a deficient number, since it is larger than the sum of its proper divisors (1).

16066639 is an equidigital number, since it uses as much as digits as its factorization.

16066639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 16066639 is about 4008.3212196629. The cubic root of 16066639 is about 252.3335582509. Note that the first 3 decimals are identical.

The spelling of 16066639 in words is "sixteen million, sixty-six thousand, six hundred thirty-nine".