66395304 has 96 divisors (see below), whose sum is σ = 187799040. Its totient is φ = 21168000.

The previous prime is 66395299. The next prime is 66395317. The reversal of 66395304 is 40359366.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 336934 + ... + 337130.

It is an arithmetic number, because the mean of its divisors is an integer number (1956240).

Almost surely, 2^66395304 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 66395304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93899520).

66395304 is an abundant number, since it is smaller than the sum of its proper divisors (121403736).

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

66395304 is a wasteful number, since it uses less digits than its factorization.

66395304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 66395304 is about 8148.3313629233. The cubic root of 66395304 is about 404.9292240291.

The spelling of 66395304 in words is "sixty-six million, three hundred ninety-five thousand, three hundred four".