66968304 has 160 divisors (see below), whose sum is σ = 202487040. Its totient is φ = 18886656.

The previous prime is 66968299. The next prime is 66968347. The reversal of 66968304 is 40386966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 625819 + ... + 625925.

It is an arithmetic number, because the mean of its divisors is an integer number (1265544).

Almost surely, 2^66968304 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 66968304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101243520).

66968304 is an abundant number, since it is smaller than the sum of its proper divisors (135518736).

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

66968304 is a wasteful number, since it uses less digits than its factorization.

66968304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 66968304 is about 8183.4164014793. The cubic root of 66968304 is about 406.0907527638.

The spelling of 66968304 in words is "sixty-six million, nine hundred sixty-eight thousand, three hundred four".