67830533 has 2 divisors, whose sum is σ = 67830534. Its totient is φ = 67830532.

The previous prime is 67830467. The next prime is 67830569. The reversal of 67830533 is 33503876.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62457409 + 5373124 = 7903^2 + 2318^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67830533 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 67830493 and 67830502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67833533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33915266 + 33915267.

It is an arithmetic number, because the mean of its divisors is an integer number (33915267).

Almost surely, 2^67830533 is an apocalyptic number.

It is an amenable number.

67830533 is a deficient number, since it is larger than the sum of its proper divisors (1).

67830533 is an equidigital number, since it uses as much as digits as its factorization.

67830533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 67830533 is about 8235.9293950349. The cubic root of 67830533 is about 407.8261566347.

The spelling of 67830533 in words is "sixty-seven million, eight hundred thirty thousand, five hundred thirty-three".