66703380 has 24 divisors (see below), whose sum is σ = 186769632. Its totient is φ = 17787552.

The previous prime is 66703379. The next prime is 66703397. The reversal of 66703380 is 8330766.

It is a happy number.

66703380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555802 + ... + 555921.

It is an arithmetic number, because the mean of its divisors is an integer number (7782068).

Almost surely, 2^66703380 is an apocalyptic number.

66703380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66703380 is an abundant number, since it is smaller than the sum of its proper divisors (120066252).

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

66703380 is a wasteful number, since it uses less digits than its factorization.

66703380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111735 (or 1111733 counting only the distinct ones).

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

The square root of 66703380 is about 8167.2137231739. The cubic root of 66703380 is about 405.5545520155.

The spelling of 66703380 in words is "sixty-six million, seven hundred three thousand, three hundred eighty".