68997928 has 16 divisors (see below), whose sum is σ = 129677760. Its totient is φ = 34417200.

The previous prime is 68997923. The next prime is 68997937. The reversal of 68997928 is 82979986.

It is not an unprimeable number, because it can be changed into a prime (68997923) 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 3 ways as a sum of consecutive naturals, for example, 6558 + ... + 13453.

It is an arithmetic number, because the mean of its divisors is an integer number (8104860).

Almost surely, 2^68997928 is an apocalyptic number.

It is an amenable number.

68997928 is a deficient number, since it is larger than the sum of its proper divisors (60679832).

68997928 is a wasteful number, since it uses less digits than its factorization.

68997928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20448 (or 20444 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 58.

The square root of 68997928 is about 8306.4991422380. The cubic root of 68997928 is about 410.1524874003.

The spelling of 68997928 in words is "sixty-eight million, nine hundred ninety-seven thousand, nine hundred twenty-eight".