67285457 has 2 divisors, whose sum is σ = 67285458. Its totient is φ = 67285456.

The previous prime is 67285453. The next prime is 67285459. The reversal of 67285457 is 75458276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45373696 + 21911761 = 6736^2 + 4681^2 .

It is a cyclic number.

It is not a de Polignac number, because 67285457 - 2² = 67285453 is a prime.

Together with 67285459, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (67285453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33642728 + 33642729.

It is an arithmetic number, because the mean of its divisors is an integer number (33642729).

Almost surely, 2^67285457 is an apocalyptic number.

It is an amenable number.

67285457 is a deficient number, since it is larger than the sum of its proper divisors (1).

67285457 is an equidigital number, since it uses as much as digits as its factorization.

67285457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 470400, while the sum is 44.

The square root of 67285457 is about 8202.7712999937. The cubic root of 67285457 is about 406.7308073902.

The spelling of 67285457 in words is "sixty-seven million, two hundred eighty-five thousand, four hundred fifty-seven".