74321666 has 8 divisors (see below), whose sum is σ = 111519180. Its totient is φ = 37148608.

The previous prime is 74321657. The next prime is 74321669. The reversal of 74321666 is 66612347.

It can be written as a sum of positive squares in 2 ways, for example, as 74321641 + 25 = 8621^2 + 5^2 .

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 (74321669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8030 + ... + 14598.

Almost surely, 2^74321666 is an apocalyptic number.

74321666 is a deficient number, since it is larger than the sum of its proper divisors (37197514).

74321666 is a wasteful number, since it uses less digits than its factorization.

74321666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12228.

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

The square root of 74321666 is about 8621.0014499477. The cubic root of 74321666 is about 420.4410823443.

The spelling of 74321666 in words is "seventy-four million, three hundred twenty-one thousand, six hundred sixty-six".