213626417 has 4 divisors (see below), whose sum is σ = 213696756. Its totient is φ = 213556080.

The previous prime is 213626401. The next prime is 213626431. The reversal of 213626417 is 714626312.

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 10962721 + 202663696 = 3311^2 + 14236^2 .

It is a cyclic number.

It is not a de Polignac number, because 213626417 - 2⁴ = 213626401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213626447) 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, 30398 + ... + 36759.

It is an arithmetic number, because the mean of its divisors is an integer number (53424189).

Almost surely, 2^213626417 is an apocalyptic number.

It is an amenable number.

213626417 is a deficient number, since it is larger than the sum of its proper divisors (70339).

213626417 is an equidigital number, since it uses as much as digits as its factorization.

213626417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70338.

The product of its digits is 12096, while the sum is 32.

The square root of 213626417 is about 14615.9644567165. The cubic root of 213626417 is about 597.7941381907.

The spelling of 213626417 in words is "two hundred thirteen million, six hundred twenty-six thousand, four hundred seventeen".