56670213 has 16 divisors (see below), whose sum is σ = 76910400. Its totient is φ = 37111296.

The previous prime is 56670193. The next prime is 56670221. The reversal of 56670213 is 31207665.

It is not a de Polignac number, because 56670213 - 2¹⁰ = 56669189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56670223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42706 + ... + 44012.

It is an arithmetic number, because the mean of its divisors is an integer number (4806900).

Almost surely, 2^56670213 is an apocalyptic number.

It is an amenable number.

56670213 is a deficient number, since it is larger than the sum of its proper divisors (20240187).

56670213 is a wasteful number, since it uses less digits than its factorization.

56670213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 56670213 is about 7527.9620748248. The cubic root of 56670213 is about 384.1064632648.

Adding to 56670213 its reverse (31207665), we get a palindrome (87877878).

The spelling of 56670213 in words is "fifty-six million, six hundred seventy thousand, two hundred thirteen".