212766453 has 8 divisors (see below), whose sum is σ = 315209600. Its totient is φ = 141844284.

The previous prime is 212766413. The next prime is 212766461. The reversal of 212766453 is 354667212.

212766453 is a `hidden beast` number, since 2 + 1 + 2 + 7 + 6 + 645 + 3 = 666.

It is not a de Polignac number, because 212766453 - 2⁹ = 212765941 is a prime.

It is a super-3 number, since 3×212766453³ (a number of 26 digits) contains 333 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 (212766403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3940093 + ... + 3940146.

It is an arithmetic number, because the mean of its divisors is an integer number (39401200).

Almost surely, 2^212766453 is an apocalyptic number.

It is an amenable number.

212766453 is a deficient number, since it is larger than the sum of its proper divisors (102443147).

212766453 is an equidigital number, since it uses as much as digits as its factorization.

212766453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7880248 (or 7880242 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 212766453 is about 14586.5161364871. The cubic root of 212766453 is about 596.9909091820.

The spelling of 212766453 in words is "two hundred twelve million, seven hundred sixty-six thousand, four hundred fifty-three".