68454940 has 12 divisors (see below), whose sum is σ = 143755416. Its totient is φ = 27381968.

The previous prime is 68454931. The next prime is 68454961. The reversal of 68454940 is 4945486.

It is a junction number, because it is equal to n+sod(n) for n = 68454893 and 68454902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711354 + ... + 1711393.

It is an arithmetic number, because the mean of its divisors is an integer number (11979618).

Almost surely, 2^68454940 is an apocalyptic number.

It is an amenable number.

68454940 is an abundant number, since it is smaller than the sum of its proper divisors (75300476).

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

68454940 is a wasteful number, since it uses less digits than its factorization.

68454940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3422756 (or 3422754 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 68454940 is about 8273.7500566551. The cubic root of 68454940 is about 409.0737368624.

The spelling of 68454940 in words is "sixty-eight million, four hundred fifty-four thousand, nine hundred forty".