68791984 has 10 divisors (see below), whose sum is σ = 133284500. Its totient is φ = 34395984.

The previous prime is 68791981. The next prime is 68791993. The reversal of 68791984 is 48919786.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68791981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2149734 + ... + 2149765.

It is an arithmetic number, because the mean of its divisors is an integer number (13328450).

Almost surely, 2^68791984 is an apocalyptic number.

It is an amenable number.

68791984 is a deficient number, since it is larger than the sum of its proper divisors (64492516).

68791984 is a wasteful number, since it uses less digits than its factorization.

68791984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4299507 (or 4299501 counting only the distinct ones).

The product of its digits is 870912, while the sum is 52.

The square root of 68791984 is about 8294.0933199476. The cubic root of 68791984 is about 409.7440083537.

The spelling of 68791984 in words is "sixty-eight million, seven hundred ninety-one thousand, nine hundred eighty-four".