68872905 has 24 divisors (see below), whose sum is σ = 119995200. Its totient is φ = 36542880.

The previous prime is 68872897. The next prime is 68872919. The reversal of 68872905 is 50927886.

It is not a de Polignac number, because 68872905 - 2³ = 68872897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5110 + ... + 12800.

It is an arithmetic number, because the mean of its divisors is an integer number (4999800).

Almost surely, 2^68872905 is an apocalyptic number.

It is an amenable number.

68872905 is a deficient number, since it is larger than the sum of its proper divisors (51122295).

68872905 is a wasteful number, since it uses less digits than its factorization.

68872905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7901 (or 7898 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 68872905 is about 8298.9701168278. The cubic root of 68872905 is about 409.9046079879.

The spelling of 68872905 in words is "sixty-eight million, eight hundred seventy-two thousand, nine hundred five".