68175840 has 96 divisors (see below), whose sum is σ = 216258336. Its totient is φ = 18053120.

The previous prime is 68175829. The next prime is 68175853. The reversal of 68175840 is 4857186.

It is a tau number, because it is divible by the number of its divisors (96).

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, 82630 + ... + 83450.

It is an arithmetic number, because the mean of its divisors is an integer number (2252691).

Almost surely, 2^68175840 is an apocalyptic number.

68175840 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 68175840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108129168).

68175840 is an abundant number, since it is smaller than the sum of its proper divisors (148082496).

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

68175840 is a wasteful number, since it uses less digits than its factorization.

68175840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 68175840 is about 8256.8662336264. The cubic root of 68175840 is about 408.5170300326.

The spelling of 68175840 in words is "sixty-eight million, one hundred seventy-five thousand, eight hundred forty".