16980001 has 2 divisors, whose sum is σ = 16980002. Its totient is φ = 16980000.

The previous prime is 16979999. The next prime is 16980017. The reversal of 16980001 is 10008961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13653025 + 3326976 = 3695^2 + 1824^2 .

It is a cyclic number.

It is not a de Polignac number, because 16980001 - 2¹ = 16979999 is a prime.

Together with 16979999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16980031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8490000 + 8490001.

It is an arithmetic number, because the mean of its divisors is an integer number (8490001).

Almost surely, 2^16980001 is an apocalyptic number.

It is an amenable number.

16980001 is a deficient number, since it is larger than the sum of its proper divisors (1).

16980001 is an equidigital number, since it uses as much as digits as its factorization.

16980001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 16980001 is about 4120.6796769465. The cubic root of 16980001 is about 257.0272899705.

Adding to 16980001 its reverse (10008961), we get a palindrome (26988962).

The spelling of 16980001 in words is "sixteen million, nine hundred eighty thousand, one".