66685034 has 12 divisors (see below), whose sum is σ = 108314406. Its totient is φ = 30777552.

The previous prime is 66684997. The next prime is 66685039. The reversal of 66685034 is 43058666.

It can be written as a sum of positive squares in 3 ways, for example, as 25532809 + 41152225 = 5053^2 + 6415^2 .

It is not an unprimeable number, because it can be changed into a prime (66685039) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 98309 + ... + 98984.

Almost surely, 2^66685034 is an apocalyptic number.

66685034 is a deficient number, since it is larger than the sum of its proper divisors (41629372).

66685034 is a wasteful number, since it uses less digits than its factorization.

66685034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197321 (or 197308 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 66685034 is about 8166.0904966820. The cubic root of 66685034 is about 405.5173675628.

The spelling of 66685034 in words is "sixty-six million, six hundred eighty-five thousand, thirty-four".