19969066 has 8 divisors (see below), whose sum is σ = 32257764. Its totient is φ = 9216480.

The previous prime is 19969043. The next prime is 19969069. The reversal of 19969066 is 66096991.

It can be written as a sum of positive squares in 2 ways, for example, as 14280841 + 5688225 = 3779^2 + 2385^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (19969069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383995 + ... + 384046.

Almost surely, 2^19969066 is an apocalyptic number.

19969066 is a deficient number, since it is larger than the sum of its proper divisors (12288698).

19969066 is a wasteful number, since it uses less digits than its factorization.

19969066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768056.

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 19969066 is about 4468.6760902979. The cubic root of 19969066 is about 271.3017431215.

The spelling of 19969066 in words is "nineteen million, nine hundred sixty-nine thousand, sixty-six".