68143504 has 120 divisors (see below), whose sum is σ = 163382400. Its totient is φ = 27256320.

The previous prime is 68143483. The next prime is 68143547. The reversal of 68143504 is 40534186.

It is a happy 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 23 ways as a sum of consecutive naturals, for example, 862537 + ... + 862615.

It is an arithmetic number, because the mean of its divisors is an integer number (1361520).

Almost surely, 2^68143504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68143504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81691200).

68143504 is an abundant number, since it is smaller than the sum of its proper divisors (95238896).

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

68143504 is a wasteful number, since it uses less digits than its factorization.

68143504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 68143504 is about 8254.9078735017. The cubic root of 68143504 is about 408.4524328786.

The spelling of 68143504 in words is "sixty-eight million, one hundred forty-three thousand, five hundred four".