19973065 has 8 divisors (see below), whose sum is σ = 27391680. Its totient is φ = 13695792.

The previous prime is 19973059. The next prime is 19973071. The reversal of 19973065 is 56037991.

It is an interprime number because it is at equal distance from previous prime (19973059) and next prime (19973071).

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

It is a cyclic number.

It is not a de Polignac number, because 19973065 - 2¹⁷ = 19841993 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 285295 + ... + 285364.

It is an arithmetic number, because the mean of its divisors is an integer number (3423960).

Almost surely, 2^19973065 is an apocalyptic number.

It is an amenable number.

19973065 is a deficient number, since it is larger than the sum of its proper divisors (7418615).

19973065 is an equidigital number, since it uses as much as digits as its factorization.

19973065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570671.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 19973065 is about 4469.1235158586. The cubic root of 19973065 is about 271.3198521851.

The spelling of 19973065 in words is "nineteen million, nine hundred seventy-three thousand, sixty-five".