68293764 has 144 divisors (see below), whose sum is σ = 218889216. Its totient is φ = 17438400.

The previous prime is 68293751. The next prime is 68293781. The reversal of 68293764 is 46739286.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 196639 + ... + 196985.

It is an arithmetic number, because the mean of its divisors is an integer number (1520064).

Almost surely, 2^68293764 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 68293764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109444608).

68293764 is an abundant number, since it is smaller than the sum of its proper divisors (150595452).

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

68293764 is a wasteful number, since it uses less digits than its factorization.

68293764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446 (or 441 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 68293764 is about 8264.0041142294. The cubic root of 68293764 is about 408.7524321601.

The spelling of 68293764 in words is "sixty-eight million, two hundred ninety-three thousand, seven hundred sixty-four".