66685352 has 16 divisors (see below), whose sum is σ = 128085300. Its totient is φ = 32529280.

The previous prime is 66685343. The next prime is 66685379. The reversal of 66685352 is 25358666.

It can be written as a sum of positive squares in 2 ways, for example, as 48246916 + 18438436 = 6946^2 + 4294^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101327 + ... + 101982.

Almost surely, 2^66685352 is an apocalyptic number.

It is an amenable number.

66685352 is a deficient number, since it is larger than the sum of its proper divisors (61399948).

66685352 is a wasteful number, since it uses less digits than its factorization.

66685352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203356 (or 203352 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 66685352 is about 8166.1099674202. The cubic root of 66685352 is about 405.5180121568.

The spelling of 66685352 in words is "sixty-six million, six hundred eighty-five thousand, three hundred fifty-two".