68142715 has 32 divisors (see below), whose sum is σ = 91010304. Its totient is φ = 48752640.

The previous prime is 68142713. The next prime is 68142731. The reversal of 68142715 is 51724186.

It is not a de Polignac number, because 68142715 - 2¹ = 68142713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68142713) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147585 + ... + 148045.

It is an arithmetic number, because the mean of its divisors is an integer number (2844072).

Almost surely, 2^68142715 is an apocalyptic number.

68142715 is a deficient number, since it is larger than the sum of its proper divisors (22867589).

68142715 is a wasteful number, since it uses less digits than its factorization.

68142715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567.

The product of its digits is 13440, while the sum is 34.

The square root of 68142715 is about 8254.8600836114. The cubic root of 68142715 is about 408.4508564494.

The spelling of 68142715 in words is "sixty-eight million, one hundred forty-two thousand, seven hundred fifteen".