68415860 has 12 divisors (see below), whose sum is σ = 143673348. Its totient is φ = 27366336.

The previous prime is 68415857. The next prime is 68415863. The reversal of 68415860 is 6851486.

It is an interprime number because it is at equal distance from previous prime (68415857) and next prime (68415863).

It can be written as a sum of positive squares in 2 ways, for example, as 29203216 + 39212644 = 5404^2 + 6262^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68415863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1710377 + ... + 1710416.

It is an arithmetic number, because the mean of its divisors is an integer number (11972779).

Almost surely, 2^68415860 is an apocalyptic number.

It is an amenable number.

68415860 is an abundant number, since it is smaller than the sum of its proper divisors (75257488).

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

68415860 is a wasteful number, since it uses less digits than its factorization.

68415860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420802 (or 3420800 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 68415860 is about 8271.3880334561. The cubic root of 68415860 is about 408.9958771551.

The spelling of 68415860 in words is "sixty-eight million, four hundred fifteen thousand, eight hundred sixty".