66669308 has 12 divisors (see below), whose sum is σ = 123534432. Its totient is φ = 31373760.

The previous prime is 66669293. The next prime is 66669319. The reversal of 66669308 is 80396666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490148 + ... + 490283.

It is an arithmetic number, because the mean of its divisors is an integer number (10294536).

Almost surely, 2^66669308 is an apocalyptic number.

66669308 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

66669308 is a deficient number, since it is larger than the sum of its proper divisors (56865124).

66669308 is a wasteful number, since it uses less digits than its factorization.

66669308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980452 (or 980450 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 66669308 is about 8165.1275556479. The cubic root of 66669308 is about 405.4854880085.

The spelling of 66669308 in words is "sixty-six million, six hundred sixty-nine thousand, three hundred eight".