20832997 has 2 divisors, whose sum is σ = 20832998. Its totient is φ = 20832996.

The previous prime is 20832983. The next prime is 20833013. The reversal of 20832997 is 79923802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20802721 + 30276 = 4561^2 + 174^2 .

It is a cyclic number.

It is not a de Polignac number, because 20832997 - 2¹¹ = 20830949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20832937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10416498 + 10416499.

It is an arithmetic number, because the mean of its divisors is an integer number (10416499).

Almost surely, 2^20832997 is an apocalyptic number.

It is an amenable number.

20832997 is a deficient number, since it is larger than the sum of its proper divisors (1).

20832997 is an equidigital number, since it uses as much as digits as its factorization.

20832997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 20832997 is about 4564.3178022570. The cubic root of 20832997 is about 275.1591233357.

The spelling of 20832997 in words is "twenty million, eight hundred thirty-two thousand, nine hundred ninety-seven".