19689106 has 16 divisors (see below), whose sum is σ = 30622680. Its totient is φ = 9486720.

The previous prime is 19689101. The next prime is 19689119. The reversal of 19689106 is 60198691.

It can be written as a sum of positive squares in 4 ways, for example, as 17986081 + 1703025 = 4241^2 + 1305^2 .

It is not an unprimeable number, because it can be changed into a prime (19689101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6846 + ... + 9286.

Almost surely, 2^19689106 is an apocalyptic number.

19689106 is a deficient number, since it is larger than the sum of its proper divisors (10933574).

19689106 is a wasteful number, since it uses less digits than its factorization.

19689106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2589.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 19689106 is about 4437.2408093319. The cubic root of 19689106 is about 270.0279166379.

The spelling of 19689106 in words is "nineteen million, six hundred eighty-nine thousand, one hundred six".