67842213 has 4 divisors (see below), whose sum is σ = 90456288. Its totient is φ = 45228140.

The previous prime is 67842209. The next prime is 67842227. The reversal of 67842213 is 31224876.

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 67842213 - 2² = 67842209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67842283) 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, 11307033 + ... + 11307038.

It is an arithmetic number, because the mean of its divisors is an integer number (22614072).

Almost surely, 2^67842213 is an apocalyptic number.

It is an amenable number.

67842213 is a deficient number, since it is larger than the sum of its proper divisors (22614075).

67842213 is a wasteful number, since it uses less digits than its factorization.

67842213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22614074.

The product of its digits is 16128, while the sum is 33.

The square root of 67842213 is about 8236.6384526699. The cubic root of 67842213 is about 407.8495636753.

The spelling of 67842213 in words is "sixty-seven million, eight hundred forty-two thousand, two hundred thirteen".