19966059 has 6 divisors (see below), whose sum is σ = 28839876. Its totient is φ = 13310700.

The previous prime is 19966049. The next prime is 19966069. The reversal of 19966059 is 95066991.

It is an interprime number because it is at equal distance from previous prime (19966049) and next prime (19966069).

It is not a de Polignac number, because 19966059 - 2⁵ = 19966027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19966049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1109217 + ... + 1109234.

It is an arithmetic number, because the mean of its divisors is an integer number (4806646).

Almost surely, 2^19966059 is an apocalyptic number.

19966059 is a deficient number, since it is larger than the sum of its proper divisors (8873817).

19966059 is a wasteful number, since it uses less digits than its factorization.

19966059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218457 (or 2218454 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 19966059 is about 4468.3396245138. The cubic root of 19966059 is about 271.2881246362.

The spelling of 19966059 in words is "nineteen million, nine hundred sixty-six thousand, fifty-nine".