20166596 has 6 divisors (see below), whose sum is σ = 35291550. Its totient is φ = 10083296.

The previous prime is 20166583. The next prime is 20166617. The reversal of 20166596 is 69566102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19624900 + 541696 = 4430^2 + 736^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2520821 + ... + 2520828.

It is an arithmetic number, because the mean of its divisors is an integer number (5881925).

Almost surely, 2^20166596 is an apocalyptic number.

It is an amenable number.

20166596 is a deficient number, since it is larger than the sum of its proper divisors (15124954).

20166596 is a wasteful number, since it uses less digits than its factorization.

20166596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5041653 (or 5041651 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 20166596 is about 4490.7233270376. The cubic root of 20166596 is about 272.1933638034.

The spelling of 20166596 in words is "twenty million, one hundred sixty-six thousand, five hundred ninety-six".