20074993 has 2 divisors, whose sum is σ = 20074994. Its totient is φ = 20074992.

The previous prime is 20074987. The next prime is 20075051. The reversal of 20074993 is 39947002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15864289 + 4210704 = 3983^2 + 2052^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20074993 is a prime.

It is not a weakly prime, because it can be changed into another prime (20074973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10037496 + 10037497.

It is an arithmetic number, because the mean of its divisors is an integer number (10037497).

Almost surely, 2^20074993 is an apocalyptic number.

It is an amenable number.

20074993 is a deficient number, since it is larger than the sum of its proper divisors (1).

20074993 is an equidigital number, since it uses as much as digits as its factorization.

20074993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 20074993 is about 4480.5125822834. The cubic root of 20074993 is about 271.7806090259.

The spelling of 20074993 in words is "twenty million, seventy-four thousand, nine hundred ninety-three".