68749998 has 16 divisors (see below), whose sum is σ = 138412416. Its totient is φ = 22764600.

The previous prime is 68749969. The next prime is 68750021. The reversal of 68749998 is 89994786.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 37036 + ... + 38847.

It is an arithmetic number, because the mean of its divisors is an integer number (8650776).

Almost surely, 2^68749998 is an apocalyptic number.

68749998 is an abundant number, since it is smaller than the sum of its proper divisors (69662418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68749998 is a wasteful number, since it uses less digits than its factorization.

68749998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76039.

The product of its digits is 7838208, while the sum is 60.

The square root of 68749998 is about 8291.5618552840. The cubic root of 68749998 is about 409.6606313279.

The spelling of 68749998 in words is "sixty-eight million, seven hundred forty-nine thousand, nine hundred ninety-eight".