68874787590 has 128 divisors (see below), whose sum is σ = 194680627200. Its totient is φ = 15586704000.

The previous prime is 68874787577. The next prime is 68874787603. The reversal of 68874787590 is 9578747886.

It is an interprime number because it is at equal distance from previous prime (68874787577) and next prime (68874787603).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1006155 + ... + 1072425.

It is an arithmetic number, because the mean of its divisors is an integer number (1520942400).

Almost surely, 2^68874787590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68874787590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97340313600).

68874787590 is an abundant number, since it is smaller than the sum of its proper divisors (125805839610).

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

68874787590 is a wasteful number, since it uses less digits than its factorization.

68874787590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66403 (or 66389 counting only the distinct ones).

The product of its (nonzero) digits is 189665280, while the sum is 69.

The spelling of 68874787590 in words is "sixty-eight billion, eight hundred seventy-four million, seven hundred eighty-seven thousand, five hundred ninety".