68505736 has 32 divisors (see below), whose sum is σ = 139086360. Its totient is φ = 31444992.

The previous prime is 68505727. The next prime is 68505757. The reversal of 68505736 is 63750586.

It can be written as a sum of positive squares in 4 ways, for example, as 55502500 + 13003236 = 7450^2 + 3606^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18366 + ... + 21778.

Almost surely, 2^68505736 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 68505736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69543180).

68505736 is an abundant number, since it is smaller than the sum of its proper divisors (70580624).

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

68505736 is a wasteful number, since it uses less digits than its factorization.

68505736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3625 (or 3621 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 68505736 is about 8276.8191958022. The cubic root of 68505736 is about 409.1748942661.

The spelling of 68505736 in words is "sixty-eight million, five hundred five thousand, seven hundred thirty-six".