212864485 has 8 divisors (see below), whose sum is σ = 255699576. Its totient is φ = 170116800.

The previous prime is 212864453. The next prime is 212864489. The reversal of 212864485 is 584468212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 107371044 + 105493441 = 10362^2 + 10271^2 .

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

It is not a de Polignac number, because 212864485 - 2⁵ = 212864453 is a prime.

It is a super-2 number, since 2×212864485² = 90622577948630450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212864489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16366 + ... + 26335.

It is an arithmetic number, because the mean of its divisors is an integer number (31962447).

Almost surely, 2^212864485 is an apocalyptic number.

It is an amenable number.

212864485 is a deficient number, since it is larger than the sum of its proper divisors (42835091).

212864485 is an equidigital number, since it uses as much as digits as its factorization.

212864485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43703.

The product of its digits is 122880, while the sum is 40.

The square root of 212864485 is about 14589.8761132506. The cubic root of 212864485 is about 597.0825828238.

The spelling of 212864485 in words is "two hundred twelve million, eight hundred sixty-four thousand, four hundred eighty-five".