67868237 has 2 divisors, whose sum is σ = 67868238. Its totient is φ = 67868236.

The previous prime is 67868219. The next prime is 67868287. The reversal of 67868237 is 73286876.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66896041 + 972196 = 8179^2 + 986^2 .

It is a cyclic number.

It is not a de Polignac number, because 67868237 - 2²⁰ = 66819661 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 67868191 and 67868200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67868287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33934118 + 33934119.

It is an arithmetic number, because the mean of its divisors is an integer number (33934119).

Almost surely, 2^67868237 is an apocalyptic number.

It is an amenable number.

67868237 is a deficient number, since it is larger than the sum of its proper divisors (1).

67868237 is an equidigital number, since it uses as much as digits as its factorization.

67868237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 47.

The square root of 67868237 is about 8238.2180718891. The cubic root of 67868237 is about 407.9017068259.

The spelling of 67868237 in words is "sixty-seven million, eight hundred sixty-eight thousand, two hundred thirty-seven".