20466973 has 2 divisors, whose sum is σ = 20466974. Its totient is φ = 20466972.

The previous prime is 20466967. The next prime is 20466977. The reversal of 20466973 is 37966402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18983449 + 1483524 = 4357^2 + 1218^2 .

It is a cyclic number.

It is not a de Polignac number, because 20466973 - 2⁹ = 20466461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20466977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10233486 + 10233487.

It is an arithmetic number, because the mean of its divisors is an integer number (10233487).

Almost surely, 2^20466973 is an apocalyptic number.

It is an amenable number.

20466973 is a deficient number, since it is larger than the sum of its proper divisors (1).

20466973 is an equidigital number, since it uses as much as digits as its factorization.

20466973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 20466973 is about 4524.0438768871. The cubic root of 20466973 is about 273.5381291208.

The spelling of 20466973 in words is "twenty million, four hundred sixty-six thousand, nine hundred seventy-three".