212486465 has 4 divisors (see below), whose sum is σ = 254983764. Its totient is φ = 169989168.

The previous prime is 212486459. The next prime is 212486467. The reversal of 212486465 is 564684212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 119093569 + 93392896 = 10913^2 + 9664^2 .

It is a cyclic number.

It is not a de Polignac number, because 212486465 - 2¹⁸ = 212224321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212486467) 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 3 ways as a sum of consecutive naturals, for example, 21248642 + ... + 21248651.

It is an arithmetic number, because the mean of its divisors is an integer number (63745941).

Almost surely, 2^212486465 is an apocalyptic number.

It is an amenable number.

212486465 is a deficient number, since it is larger than the sum of its proper divisors (42497299).

212486465 is an equidigital number, since it uses as much as digits as its factorization.

212486465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42497298.

The product of its digits is 92160, while the sum is 38.

The square root of 212486465 is about 14576.9154830506. The cubic root of 212486465 is about 596.7289260515.

The spelling of 212486465 in words is "two hundred twelve million, four hundred eighty-six thousand, four hundred sixty-five".