68143339 has 4 divisors (see below), whose sum is σ = 74338200. Its totient is φ = 61948480.

The previous prime is 68143337. The next prime is 68143351. The reversal of 68143339 is 93334186.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 68143339 - 2¹ = 68143337 is a prime.

It is a super-3 number, since 3×68143339³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68143298 and 68143307.

It is not an unprimeable number, because it can be changed into a prime (68143333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3097414 + ... + 3097435.

It is an arithmetic number, because the mean of its divisors is an integer number (18584550).

Almost surely, 2^68143339 is an apocalyptic number.

68143339 is a deficient number, since it is larger than the sum of its proper divisors (6194861).

68143339 is a wasteful number, since it uses less digits than its factorization.

68143339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6194860.

The product of its digits is 46656, while the sum is 37.

The square root of 68143339 is about 8254.8978794410. The cubic root of 68143339 is about 408.4521032081.

It can be divided in two parts, 681433 and 39, that added together give a cube (681472 = 88³).

The spelling of 68143339 in words is "sixty-eight million, one hundred forty-three thousand, three hundred thirty-nine".