27940666 has 8 divisors (see below), whose sum is σ = 45134964. Its totient is φ = 12895680.

The previous prime is 27940663. The next prime is 27940667. The reversal of 27940666 is 66604972.

It can be written as a sum of positive squares in 2 ways, for example, as 26061025 + 1879641 = 5105^2 + 1371^2 .

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 (27940663) 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, 537295 + ... + 537346.

Almost surely, 2^27940666 is an apocalyptic number.

27940666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

27940666 is a deficient number, since it is larger than the sum of its proper divisors (17194298).

27940666 is a wasteful number, since it uses less digits than its factorization.

27940666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074656.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 27940666 is about 5285.8931128051. The cubic root of 27940666 is about 303.4442538702. Note that the first 3 decimals are identical.

The spelling of 27940666 in words is "twenty-seven million, nine hundred forty thousand, six hundred sixty-six".