67028537 has 2 divisors, whose sum is σ = 67028538. Its totient is φ = 67028536.

The previous prime is 67028503. The next prime is 67028539. The reversal of 67028537 is 73582076.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66896041 + 132496 = 8179^2 + 364^2 .

It is a cyclic number.

It is not a de Polignac number, because 67028537 - 2²⁴ = 50251321 is a prime.

Together with 67028539, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67028537.

It is not a weakly prime, because it can be changed into another prime (67028539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33514268 + 33514269.

It is an arithmetic number, because the mean of its divisors is an integer number (33514269).

Almost surely, 2^67028537 is an apocalyptic number.

It is an amenable number.

67028537 is a deficient number, since it is larger than the sum of its proper divisors (1).

67028537 is an equidigital number, since it uses as much as digits as its factorization.

67028537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 67028537 is about 8187.0957610132. The cubic root of 67028537 is about 406.2124657393.

The spelling of 67028537 in words is "sixty-seven million, twenty-eight thousand, five hundred thirty-seven".