68276945 has 16 divisors (see below), whose sum is σ = 89961408. Its totient is φ = 49333440.

The previous prime is 68276941. The next prime is 68276977. The reversal of 68276945 is 54967286.

It is not a de Polignac number, because 68276945 - 2² = 68276941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68276945.

It is not an unprimeable number, because it can be changed into a prime (68276941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4682 + ... + 12588.

It is an arithmetic number, because the mean of its divisors is an integer number (5622588).

Almost surely, 2^68276945 is an apocalyptic number.

It is an amenable number.

68276945 is a deficient number, since it is larger than the sum of its proper divisors (21684463).

68276945 is a wasteful number, since it uses less digits than its factorization.

68276945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8080.

The product of its digits is 725760, while the sum is 47.

The square root of 68276945 is about 8262.9864455898. The cubic root of 68276945 is about 408.7188743300.

The spelling of 68276945 in words is "sixty-eight million, two hundred seventy-six thousand, nine hundred forty-five".