68778500 has 96 divisors (see below), whose sum is σ = 176047872. Its totient is φ = 22982400.

The previous prime is 68778473. The next prime is 68778509. The reversal of 68778500 is 587786.

It is not an unprimeable number, because it can be changed into a prime (68778509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150272 + ... + 150728.

It is an arithmetic number, because the mean of its divisors is an integer number (1833832).

Almost surely, 2^68778500 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 68778500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88023936).

68778500 is an abundant number, since it is smaller than the sum of its proper divisors (107269372).

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

68778500 is a wasteful number, since it uses less digits than its factorization.

68778500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 41.

The square root of 68778500 is about 8293.2804124785. The cubic root of 68778500 is about 409.7172351314.

The spelling of 68778500 in words is "sixty-eight million, seven hundred seventy-eight thousand, five hundred".