19973066 has 8 divisors (see below), whose sum is σ = 31536480. Its totient is φ = 9460908.

The previous prime is 19973059. The next prime is 19973071. The reversal of 19973066 is 66037991.

It is a happy number.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 262766 + ... + 262841.

It is an arithmetic number, because the mean of its divisors is an integer number (3942060).

Almost surely, 2^19973066 is an apocalyptic number.

19973066 is a deficient number, since it is larger than the sum of its proper divisors (11563414).

19973066 is a wasteful number, since it uses less digits than its factorization.

19973066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525628.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 19973066 is about 4469.1236277373. The cubic root of 19973066 is about 271.3198567132.

The spelling of 19973066 in words is "nineteen million, nine hundred seventy-three thousand, sixty-six".