212646413 has 4 divisors (see below), whose sum is σ = 243024480. Its totient is φ = 182268348.

The previous prime is 212646403. The next prime is 212646439. The reversal of 212646413 is 314646212.

212646413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212646413 - 2¹² = 212642317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212646403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15189023 + ... + 15189036.

It is an arithmetic number, because the mean of its divisors is an integer number (60756120).

Almost surely, 2^212646413 is an apocalyptic number.

It is an amenable number.

212646413 is a deficient number, since it is larger than the sum of its proper divisors (30378067).

212646413 is an equidigital number, since it uses as much as digits as its factorization.

212646413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30378066.

The product of its digits is 6912, while the sum is 29.

The square root of 212646413 is about 14582.4007968510. The cubic root of 212646413 is about 596.8786166205.

The spelling of 212646413 in words is "two hundred twelve million, six hundred forty-six thousand, four hundred thirteen".