68312771 has 4 divisors (see below), whose sum is σ = 71908200. Its totient is φ = 64717344.

The previous prime is 68312753. The next prime is 68312789. The reversal of 68312771 is 17721386.

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

It is an interprime number because it is at equal distance from previous prime (68312753) and next prime (68312789).

It is not a de Polignac number, because 68312771 - 2¹⁴ = 68296387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68312791) 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, 1797686 + ... + 1797723.

It is an arithmetic number, because the mean of its divisors is an integer number (17977050).

Almost surely, 2^68312771 is an apocalyptic number.

68312771 is a deficient number, since it is larger than the sum of its proper divisors (3595429).

68312771 is a wasteful number, since it uses less digits than its factorization.

68312771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3595428.

The product of its digits is 14112, while the sum is 35.

The square root of 68312771 is about 8265.1540215534. The cubic root of 68312771 is about 408.7903489302.

The spelling of 68312771 in words is "sixty-eight million, three hundred twelve thousand, seven hundred seventy-one".