66117304 has 48 divisors (see below), whose sum is σ = 137415600. Its totient is φ = 29800320.

The previous prime is 66117257. The next prime is 66117319. The reversal of 66117304 is 40371166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 161452 + ... + 161860.

It is an arithmetic number, because the mean of its divisors is an integer number (2862825).

Almost surely, 2^66117304 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 66117304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68707800).

66117304 is an abundant number, since it is smaller than the sum of its proper divisors (71298296).

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

66117304 is a wasteful number, since it uses less digits than its factorization.

66117304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 66117304 is about 8131.2547617204. The cubic root of 66117304 is about 404.3632813783.

It can be divided in two parts, 66 and 117304, that added together give a triangular number (117370 = T₄₈₄).

The spelling of 66117304 in words is "sixty-six million, one hundred seventeen thousand, three hundred four".