68546840 has 16 divisors (see below), whose sum is σ = 154230480. Its totient is φ = 27418720.

The previous prime is 68546833. The next prime is 68546843. The reversal of 68546840 is 4864586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68546843) 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, 856796 + ... + 856875.

It is an arithmetic number, because the mean of its divisors is an integer number (9639405).

Almost surely, 2^68546840 is an apocalyptic number.

It is an amenable number.

68546840 is an abundant number, since it is smaller than the sum of its proper divisors (85683640).

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

68546840 is a wasteful number, since it uses less digits than its factorization.

68546840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713682 (or 1713678 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The square root of 68546840 is about 8279.3019029384. The cubic root of 68546840 is about 409.2567139947.

The spelling of 68546840 in words is "sixty-eight million, five hundred forty-six thousand, eight hundred forty".