68312773 has 4 divisors (see below), whose sum is σ = 68519488. Its totient is φ = 68106060.

The previous prime is 68312753. The next prime is 68312789. The reversal of 68312773 is 37721386.

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 not a de Polignac number, because 68312773 - 2⁹ = 68312261 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 (68312753) 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, 102861 + ... + 103522.

It is an arithmetic number, because the mean of its divisors is an integer number (17129872).

Almost surely, 2^68312773 is an apocalyptic number.

It is an amenable number.

68312773 is a deficient number, since it is larger than the sum of its proper divisors (206715).

68312773 is a wasteful number, since it uses less digits than its factorization.

68312773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206714.

The product of its digits is 42336, while the sum is 37.

The square root of 68312773 is about 8265.1541425433. The cubic root of 68312773 is about 408.7903529196.

It can be divided in two parts, 6831 and 2773, that added together give a square (9604 = 98²).

The spelling of 68312773 in words is "sixty-eight million, three hundred twelve thousand, seven hundred seventy-three".