211424065 has 8 divisors (see below), whose sum is σ = 262457640. Its totient is φ = 163306752.

The previous prime is 211424063. The next prime is 211424089. The reversal of 211424065 is 560424112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1985281 + 209438784 = 1409^2 + 14472^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211424065 - 2¹ = 211424063 is a prime.

It is a super-2 number, since 2×211424065² = 89400270522248450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211424063) 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 in 7 ways as a sum of consecutive naturals, for example, 728904 + ... + 729193.

It is an arithmetic number, because the mean of its divisors is an integer number (32807205).

Almost surely, 2^211424065 is an apocalyptic number.

It is an amenable number.

211424065 is a deficient number, since it is larger than the sum of its proper divisors (51033575).

211424065 is a wasteful number, since it uses less digits than its factorization.

211424065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458131.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 211424065 is about 14540.4286387988. The cubic root of 211424065 is about 595.7327460022.

Adding to 211424065 its reverse (560424112), we get a palindrome (771848177).

The spelling of 211424065 in words is "two hundred eleven million, four hundred twenty-four thousand, sixty-five".