68546493 has 20 divisors (see below), whose sum is σ = 104082748. Its totient is φ = 44945280.

The previous prime is 68546477. The next prime is 68546497. The reversal of 68546493 is 39464586.

68546493 is a `hidden beast` number, since 68 + 546 + 49 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13816089 + 54730404 = 3717^2 + 7398^2 .

It is not a de Polignac number, because 68546493 - 2⁴ = 68546477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68546497) 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 in 19 ways as a sum of consecutive naturals, for example, 1996 + ... + 11877.

Almost surely, 2^68546493 is an apocalyptic number.

It is an amenable number.

68546493 is a deficient number, since it is larger than the sum of its proper divisors (35536255).

68546493 is a wasteful number, since it uses less digits than its factorization.

68546493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13946 (or 13937 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 68546493 is about 8279.2809470388. The cubic root of 68546493 is about 409.2560234094.

The spelling of 68546493 in words is "sixty-eight million, five hundred forty-six thousand, four hundred ninety-three".