74006666 has 8 divisors (see below), whose sum is σ = 114838020. Its totient is φ = 35727328.

The previous prime is 74006609. The next prime is 74006677. The reversal of 74006666 is 66660047.

It can be written as a sum of positive squares in 2 ways, for example, as 70476025 + 3530641 = 8395^2 + 1879^2 .

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

It is a super-2 number, since 2×74006666² = 10953973224871112, which contains 22 as substring.

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, 637931 + ... + 638046.

Almost surely, 2^74006666 is an apocalyptic number.

74006666 is a deficient number, since it is larger than the sum of its proper divisors (40831354).

74006666 is a wasteful number, since it uses less digits than its factorization.

74006666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276008.

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

The square root of 74006666 is about 8602.7127116974. The cubic root of 74006666 is about 419.8462513585.

The spelling of 74006666 in words is "seventy-four million, six thousand, six hundred sixty-six".