68880040 has 32 divisors (see below), whose sum is σ = 156854880. Its totient is φ = 27218752.

The previous prime is 68880013. The next prime is 68880061. The reversal of 68880040 is 4008886.

It is a junction number, because it is equal to n+sod(n) for n = 68879978 and 68880005.

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, 7054 + ... + 13693.

It is an arithmetic number, because the mean of its divisors is an integer number (4901715).

Almost surely, 2^68880040 is an apocalyptic number.

It is an amenable number.

68880040 is an abundant number, since it is smaller than the sum of its proper divisors (87974840).

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

68880040 is a wasteful number, since it uses less digits than its factorization.

68880040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20841 (or 20837 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 68880040 is about 8299.3999783117. The cubic root of 68880040 is about 409.9187624095.

The spelling of 68880040 in words is "sixty-eight million, eight hundred eighty thousand, forty".