68481773 has 4 divisors (see below), whose sum is σ = 69938880. Its totient is φ = 67024668.

The previous prime is 68481689. The next prime is 68481793. The reversal of 68481773 is 37718486.

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 68481773 - 2¹² = 68477677 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 (68481793) 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, 728483 + ... + 728576.

It is an arithmetic number, because the mean of its divisors is an integer number (17484720).

Almost surely, 2^68481773 is an apocalyptic number.

It is an amenable number.

68481773 is a deficient number, since it is larger than the sum of its proper divisors (1457107).

68481773 is a wasteful number, since it uses less digits than its factorization.

68481773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457106.

The product of its digits is 225792, while the sum is 44.

The square root of 68481773 is about 8275.3714720247. The cubic root of 68481773 is about 409.1271795196.

The spelling of 68481773 in words is "sixty-eight million, four hundred eighty-one thousand, seven hundred seventy-three".