67490893 has 2 divisors, whose sum is σ = 67490894. Its totient is φ = 67490892.

The previous prime is 67490887. The next prime is 67490897. The reversal of 67490893 is 39809476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67272804 + 218089 = 8202^2 + 467^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67490893 is a prime.

It is a super-3 number, since 3×67490893³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67490897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33745446 + 33745447.

It is an arithmetic number, because the mean of its divisors is an integer number (33745447).

Almost surely, 2^67490893 is an apocalyptic number.

It is an amenable number.

67490893 is a deficient number, since it is larger than the sum of its proper divisors (1).

67490893 is an equidigital number, since it uses as much as digits as its factorization.

67490893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 67490893 is about 8215.2841095120. The cubic root of 67490893 is about 407.1443304055.

The spelling of 67490893 in words is "sixty-seven million, four hundred ninety thousand, eight hundred ninety-three".