68302143 has 32 divisors (see below), whose sum is σ = 124544000. Its totient is φ = 36026208.

The previous prime is 68302133. The next prime is 68302147. The reversal of 68302143 is 34120386.

It is a happy number.

It is not a de Polignac number, because 68302143 - 2⁶ = 68302079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68302147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11443 + ... + 16356.

It is an arithmetic number, because the mean of its divisors is an integer number (3892000).

Almost surely, 2^68302143 is an apocalyptic number.

68302143 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

68302143 is a deficient number, since it is larger than the sum of its proper divisors (56241857).

68302143 is a wasteful number, since it uses less digits than its factorization.

68302143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27828 (or 27822 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 68302143 is about 8264.5110563179. The cubic root of 68302143 is about 408.7691481645.

The spelling of 68302143 in words is "sixty-eight million, three hundred two thousand, one hundred forty-three".