68308471 has 16 divisors (see below), whose sum is σ = 86565888. Its totient is φ = 52351200.

The previous prime is 68308453. The next prime is 68308483. The reversal of 68308471 is 17480386.

It is a happy number.

It is not a de Polignac number, because 68308471 - 2⁹ = 68307959 is a prime.

It is a super-3 number, since 3×68308471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68308471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68308451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2575 + ... + 11968.

It is an arithmetic number, because the mean of its divisors is an integer number (5410368).

Almost surely, 2^68308471 is an apocalyptic number.

68308471 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

68308471 is a deficient number, since it is larger than the sum of its proper divisors (18257417).

68308471 is a wasteful number, since it uses less digits than its factorization.

68308471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14622.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 68308471 is about 8264.8938892160. The cubic root of 68308471 is about 408.7817715424.

The spelling of 68308471 in words is "sixty-eight million, three hundred eight thousand, four hundred seventy-one".