19896066 has 12 divisors (see below), whose sum is σ = 43108182. Its totient is φ = 6632016.

The previous prime is 19896053. The next prime is 19896083. The reversal of 19896066 is 66069891.

It can be written as a sum of positive squares in only one way, i.e., 13286025 + 6610041 = 3645^2 + 2571^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 552651 + ... + 552686.

Almost surely, 2^19896066 is an apocalyptic number.

19896066 is an abundant number, since it is smaller than the sum of its proper divisors (23212116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19896066 is a wasteful number, since it uses less digits than its factorization.

19896066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105345 (or 1105342 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 19896066 is about 4460.5006445465. The cubic root of 19896066 is about 270.9707443353.

The spelling of 19896066 in words is "nineteen million, eight hundred ninety-six thousand, sixty-six".