66706468 has 6 divisors (see below), whose sum is σ = 116736326. Its totient is φ = 33353232.

The previous prime is 66706457. The next prime is 66706469. The reversal of 66706468 is 86460766.

It can be written as a sum of positive squares in only one way, i.e., 62220544 + 4485924 = 7888^2 + 2118^2 .

It is not an unprimeable number, because it can be changed into a prime (66706469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8338305 + ... + 8338312.

Almost surely, 2^66706468 is an apocalyptic number.

It is an amenable number.

66706468 is a deficient number, since it is larger than the sum of its proper divisors (50029858).

66706468 is a wasteful number, since it uses less digits than its factorization.

66706468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16676621 (or 16676619 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 66706468 is about 8167.4027695468. The cubic root of 66706468 is about 405.5608102347.

The spelling of 66706468 in words is "sixty-six million, seven hundred six thousand, four hundred sixty-eight".