68751040 has 56 divisors (see below), whose sum is σ = 164756592. Its totient is φ = 27325440.

The previous prime is 68750999. The next prime is 68751047. The reversal of 68751040 is 4015786.

It is a junction number, because it is equal to n+sod(n) for n = 68750993 and 68751011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68751047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57327 + ... + 58513.

It is an arithmetic number, because the mean of its divisors is an integer number (2942082).

Almost surely, 2^68751040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68751040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82378296).

68751040 is an abundant number, since it is smaller than the sum of its proper divisors (96005552).

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

68751040 is a wasteful number, since it uses less digits than its factorization.

68751040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385 (or 1375 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 68751040 is about 8291.6246900110. The cubic root of 68751040 is about 409.6627009726.

The spelling of 68751040 in words is "sixty-eight million, seven hundred fifty-one thousand, forty".