68471893 has 4 divisors (see below), whose sum is σ = 78253600. Its totient is φ = 58690188.

The previous prime is 68471891. The next prime is 68471957. The reversal of 68471893 is 39817486.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39817486 = 2 ⋅19908743.

It is a cyclic number.

It is not a de Polignac number, because 68471893 - 2¹ = 68471891 is a prime.

It is a super-3 number, since 3×68471893³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68471891) 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 in 3 ways as a sum of consecutive naturals, for example, 4890843 + ... + 4890856.

It is an arithmetic number, because the mean of its divisors is an integer number (19563400).

Almost surely, 2^68471893 is an apocalyptic number.

It is an amenable number.

68471893 is a deficient number, since it is larger than the sum of its proper divisors (9781707).

68471893 is an equidigital number, since it uses as much as digits as its factorization.

68471893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9781706.

The product of its digits is 290304, while the sum is 46.

The square root of 68471893 is about 8274.7744984380. The cubic root of 68471893 is about 409.1075033792.

The spelling of 68471893 in words is "sixty-eight million, four hundred seventy-one thousand, eight hundred ninety-three".