68015040 has 56 divisors (see below), whose sum is σ = 215950800. Its totient is φ = 18137088.

The previous prime is 68015033. The next prime is 68015053. The reversal of 68015040 is 4051086.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 68015040.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 34465 + ... + 36384.

Almost surely, 2^68015040 is an apocalyptic number.

68015040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68015040 is an abundant number, since it is smaller than the sum of its proper divisors (147935760).

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

68015040 is a wasteful number, since it uses less digits than its factorization.

68015040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70869 (or 70859 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 68015040 is about 8247.1231347665. The cubic root of 68015040 is about 408.1956001758.

The spelling of 68015040 in words is "sixty-eight million, fifteen thousand, forty".