66006674 has 8 divisors (see below), whose sum is σ = 99062460. Its totient is φ = 32985856.

The previous prime is 66006671. The next prime is 66006701. The reversal of 66006674 is 47660066.

It can be written as a sum of positive squares in 2 ways, for example, as 51222649 + 14784025 = 7157^2 + 3845^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (66006671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3359 + ... + 11970.

Almost surely, 2^66006674 is an apocalyptic number.

66006674 is a deficient number, since it is larger than the sum of its proper divisors (33055786).

66006674 is a wasteful number, since it uses less digits than its factorization.

66006674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17484.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 66006674 is about 8124.4491505578. The cubic root of 66006674 is about 404.1376234394.

It can be divided in two parts, 660066 and 74, that multiplied together give a palindrome (48844884).

The spelling of 66006674 in words is "sixty-six million, six thousand, six hundred seventy-four".