19996073 has 2 divisors, whose sum is σ = 19996074. Its totient is φ = 19996072.

The previous prime is 19996061. The next prime is 19996099. The reversal of 19996073 is 37069991.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11539609 + 8456464 = 3397^2 + 2908^2 .

It is a cyclic number.

It is not a de Polignac number, because 19996073 - 2¹⁴ = 19979689 is a prime.

It is not a weakly prime, because it can be changed into another prime (19996003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9998036 + 9998037.

It is an arithmetic number, because the mean of its divisors is an integer number (9998037).

Almost surely, 2^19996073 is an apocalyptic number.

It is an amenable number.

19996073 is a deficient number, since it is larger than the sum of its proper divisors (1).

19996073 is an equidigital number, since it uses as much as digits as its factorization.

19996073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 19996073 is about 4471.6968814981. The cubic root of 19996073 is about 271.4239946333.

The spelling of 19996073 in words is "nineteen million, nine hundred ninety-six thousand, seventy-three".