68506940 has 24 divisors (see below), whose sum is σ = 152327952. Its totient is φ = 25790720.

The previous prime is 68506939. The next prime is 68506967. The reversal of 68506940 is 4960586.

It is a junction number, because it is equal to n+sod(n) for n = 68506894 and 68506903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100406 + ... + 101085.

It is an arithmetic number, because the mean of its divisors is an integer number (6346998).

Almost surely, 2^68506940 is an apocalyptic number.

It is an amenable number.

68506940 is an abundant number, since it is smaller than the sum of its proper divisors (83821012).

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

68506940 is a wasteful number, since it uses less digits than its factorization.

68506940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201517 (or 201515 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 68506940 is about 8276.8919287375. The cubic root of 68506940 is about 409.1772913582.

The spelling of 68506940 in words is "sixty-eight million, five hundred six thousand, nine hundred forty".