66600074 has 8 divisors (see below), whose sum is σ = 102600228. Its totient is φ = 32400000.

The previous prime is 66600071. The next prime is 66600097. The reversal of 66600074 is 47000666.

It can be written as a sum of positive squares in 2 ways, for example, as 56896849 + 9703225 = 7543^2 + 3115^2 .

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 (66600071) 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, 449927 + ... + 450074.

Almost surely, 2^66600074 is an apocalyptic number.

66600074 is a deficient number, since it is larger than the sum of its proper divisors (36000154).

66600074 is a wasteful number, since it uses less digits than its factorization.

66600074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900040.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 66600074 is about 8160.8868390635. The cubic root of 66600074 is about 405.3450780432.

The spelling of 66600074 in words is "sixty-six million, six hundred thousand, seventy-four".