68142877 has 4 divisors (see below), whose sum is σ = 74337696. Its totient is φ = 61948060.

The previous prime is 68142857. The next prime is 68142881. The reversal of 68142877 is 77824186.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68142877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68142857) 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, 3097393 + ... + 3097414.

It is an arithmetic number, because the mean of its divisors is an integer number (18584424).

Almost surely, 2^68142877 is an apocalyptic number.

It is an amenable number.

68142877 is a deficient number, since it is larger than the sum of its proper divisors (6194819).

68142877 is a wasteful number, since it uses less digits than its factorization.

68142877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6194818.

The product of its digits is 150528, while the sum is 43.

The square root of 68142877 is about 8254.8698960068. The cubic root of 68142877 is about 408.4511801279.

The spelling of 68142877 in words is "sixty-eight million, one hundred forty-two thousand, eight hundred seventy-seven".