68832540 has 72 divisors (see below), whose sum is σ = 238623840. Its totient is φ = 15732864.

The previous prime is 68832479. The next prime is 68832571. The reversal of 68832540 is 4523886.

68832540 is a `hidden beast` number, since 6 + 88 + 32 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 68832495 and 68832504.

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 23 ways as a sum of consecutive naturals, for example, 26055 + ... + 28574.

It is an arithmetic number, because the mean of its divisors is an integer number (3314220).

Almost surely, 2^68832540 is an apocalyptic number.

68832540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68832540 is an abundant number, since it is smaller than the sum of its proper divisors (169791300).

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

68832540 is a wasteful number, since it uses less digits than its factorization.

68832540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54651 (or 54646 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 68832540 is about 8296.5378321321. The cubic root of 68832540 is about 409.8245134382.

The spelling of 68832540 in words is "sixty-eight million, eight hundred thirty-two thousand, five hundred forty".