20679193 has 2 divisors, whose sum is σ = 20679194. Its totient is φ = 20679192.

The previous prime is 20679187. The next prime is 20679199. The reversal of 20679193 is 39197602.

It is a balanced prime because it is at equal distance from previous prime (20679187) and next prime (20679199).

It can be written as a sum of positive squares in only one way, i.e., 10419984 + 10259209 = 3228^2 + 3203^2 .

It is a cyclic number.

It is not a de Polignac number, because 20679193 - 2⁵ = 20679161 is a prime.

It is not a weakly prime, because it can be changed into another prime (20679199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10339596 + 10339597.

It is an arithmetic number, because the mean of its divisors is an integer number (10339597).

Almost surely, 2^20679193 is an apocalyptic number.

It is an amenable number.

20679193 is a deficient number, since it is larger than the sum of its proper divisors (1).

20679193 is an equidigital number, since it uses as much as digits as its factorization.

20679193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 20679193 is about 4547.4380699466. The cubic root of 20679193 is about 274.4803099779.

The spelling of 20679193 in words is "twenty million, six hundred seventy-nine thousand, one hundred ninety-three".