68905924 has 12 divisors (see below), whose sum is σ = 121218048. Its totient is φ = 34272200.

The previous prime is 68905919. The next prime is 68905957. The reversal of 68905924 is 42950986.

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 3 ways as a sum of consecutive naturals, for example, 44332 + ... + 45859.

It is an arithmetic number, because the mean of its divisors is an integer number (10101504).

Almost surely, 2^68905924 is an apocalyptic number.

It is an amenable number.

68905924 is a deficient number, since it is larger than the sum of its proper divisors (52312124).

68905924 is a wasteful number, since it uses less digits than its factorization.

68905924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90386 (or 90384 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 68905924 is about 8300.9592216803. The cubic root of 68905924 is about 409.9701029161.

The spelling of 68905924 in words is "sixty-eight million, nine hundred five thousand, nine hundred twenty-four".