17485997 has 2 divisors, whose sum is σ = 17485998. Its totient is φ = 17485996.

The previous prime is 17485991. The next prime is 17486009. The reversal of 17485997 is 79958471.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16924996 + 561001 = 4114^2 + 749^2 .

It is a cyclic number.

It is not a de Polignac number, because 17485997 - 2⁴ = 17485981 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17485991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8742998 + 8742999.

It is an arithmetic number, because the mean of its divisors is an integer number (8742999).

Almost surely, 2^17485997 is an apocalyptic number.

It is an amenable number.

17485997 is a deficient number, since it is larger than the sum of its proper divisors (1).

17485997 is an equidigital number, since it uses as much as digits as its factorization.

17485997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 50.

The square root of 17485997 is about 4181.6261191073. The cubic root of 17485997 is about 259.5554385238. Note that the first 3 decimals are identical.

The spelling of 17485997 in words is "seventeen million, four hundred eighty-five thousand, nine hundred ninety-seven".