66703308 has 72 divisors (see below), whose sum is σ = 191730672. Its totient is φ = 17934336.

The previous prime is 66703303. The next prime is 66703331. The reversal of 66703308 is 80330766.

It is a happy number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (66703303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6660 + ... + 13332.

It is an arithmetic number, because the mean of its divisors is an integer number (2662926).

Almost surely, 2^66703308 is an apocalyptic number.

66703308 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66703308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95865336).

66703308 is an abundant number, since it is smaller than the sum of its proper divisors (125027364).

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

66703308 is a wasteful number, since it uses less digits than its factorization.

66703308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6711 (or 6702 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 66703308 is about 8167.2093153047. The cubic root of 66703308 is about 405.5544060961.

The spelling of 66703308 in words is "sixty-six million, seven hundred three thousand, three hundred eight".