27420666 has 32 divisors (see below), whose sum is σ = 67498368. Its totient is φ = 7231680.

The previous prime is 27420661. The next prime is 27420671. The reversal of 27420666 is 66602472.

It is an interprime number because it is at equal distance from previous prime (27420661) and next prime (27420671).

It is not an unprimeable number, because it can be changed into a prime (27420661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24565 + ... + 25656.

It is an arithmetic number, because the mean of its divisors is an integer number (2109324).

Almost surely, 2^27420666 is an apocalyptic number.

27420666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

27420666 is an abundant number, since it is smaller than the sum of its proper divisors (40077702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27420666 is a wasteful number, since it uses less digits than its factorization.

27420666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50246.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 27420666 is about 5236.4745774232. The cubic root of 27420666 is about 301.5500000958.

The spelling of 27420666 in words is "twenty-seven million, four hundred twenty thousand, six hundred sixty-six".