68676540 has 48 divisors (see below), whose sum is σ = 194076960. Its totient is φ = 18144000.

The previous prime is 68676529. The next prime is 68676557. The reversal of 68676540 is 4567686.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 68676492 and 68676501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1290 + ... + 11790.

It is an arithmetic number, because the mean of its divisors is an integer number (4043270).

Almost surely, 2^68676540 is an apocalyptic number.

68676540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68676540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97038480).

68676540 is an abundant number, since it is smaller than the sum of its proper divisors (125400420).

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

68676540 is a wasteful number, since it uses less digits than its factorization.

68676540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10622 (or 10620 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 68676540 is about 8287.1309872597. The cubic root of 68676540 is about 409.5146745969.

The spelling of 68676540 in words is "sixty-eight million, six hundred seventy-six thousand, five hundred forty".