68782045 has 4 divisors (see below), whose sum is σ = 82538460. Its totient is φ = 55025632.

The previous prime is 68782027. The next prime is 68782097. The reversal of 68782045 is 54028786.

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 40170244 + 28611801 = 6338^2 + 5349^2 .

It is a cyclic number.

It is not a de Polignac number, because 68782045 - 2⁵ = 68782013 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 68781989 and 68782007.

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, 6878200 + ... + 6878209.

It is an arithmetic number, because the mean of its divisors is an integer number (20634615).

Almost surely, 2^68782045 is an apocalyptic number.

It is an amenable number.

68782045 is a deficient number, since it is larger than the sum of its proper divisors (13756415).

68782045 is a wasteful number, since it uses less digits than its factorization.

68782045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13756414.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 68782045 is about 8293.4941369727. The cubic root of 68782045 is about 409.7242742625.

The spelling of 68782045 in words is "sixty-eight million, seven hundred eighty-two thousand, forty-five".