67197213 has 12 divisors (see below), whose sum is σ = 97143228. Its totient is φ = 44760960.

The previous prime is 67197203. The next prime is 67197223. The reversal of 67197213 is 31279176.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (67197203) and next prime (67197223).

It can be written as a sum of positive squares in 2 ways, for example, as 9998244 + 57198969 = 3162^2 + 7563^2 .

It is not a de Polignac number, because 67197213 - 2⁴ = 67197197 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67197203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12453 + ... + 17013.

It is an arithmetic number, because the mean of its divisors is an integer number (8095269).

Almost surely, 2^67197213 is an apocalyptic number.

It is an amenable number.

67197213 is a deficient number, since it is larger than the sum of its proper divisors (29946015).

67197213 is a wasteful number, since it uses less digits than its factorization.

67197213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6204 (or 6201 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 67197213 is about 8197.3906214112. The cubic root of 67197213 is about 406.5529222184.

The spelling of 67197213 in words is "sixty-seven million, one hundred ninety-seven thousand, two hundred thirteen".