68773805 has 4 divisors (see below), whose sum is σ = 82528572. Its totient is φ = 55019040.

The previous prime is 68773799. The next prime is 68773843. The reversal of 68773805 is 50837786.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23319241 + 45454564 = 4829^2 + 6742^2 .

It is not a de Polignac number, because 68773805 - 2¹⁸ = 68511661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6877376 + ... + 6877385.

It is an arithmetic number, because the mean of its divisors is an integer number (20632143).

Almost surely, 2^68773805 is an apocalyptic number.

It is an amenable number.

68773805 is a deficient number, since it is larger than the sum of its proper divisors (13754767).

68773805 is a wasteful number, since it uses less digits than its factorization.

68773805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13754766.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 68773805 is about 8292.9973471598. The cubic root of 68773805 is about 409.7079121298.

Adding to 68773805 its sum of digits (44), we get a square (68773849 = 8293²).

The spelling of 68773805 in words is "sixty-eight million, seven hundred seventy-three thousand, eight hundred five".