27480645 has 12 divisors (see below), whose sum is σ = 47633196. Its totient is φ = 14656320.

The previous prime is 27480643. The next prime is 27480647. The reversal of 27480645 is 54608472.

27480645 is a `hidden beast` number, since 2 + 7 + 4 + 8 + 0 + 645 = 666.

It is an interprime number because it is at equal distance from previous prime (27480643) and next prime (27480647).

It can be written as a sum of positive squares in 2 ways, for example, as 7257636 + 20223009 = 2694^2 + 4497^2 .

It is not a de Polignac number, because 27480645 - 2¹ = 27480643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27480643) 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 11 ways as a sum of consecutive naturals, for example, 305296 + ... + 305385.

It is an arithmetic number, because the mean of its divisors is an integer number (3969433).

Almost surely, 2^27480645 is an apocalyptic number.

It is an amenable number.

27480645 is a deficient number, since it is larger than the sum of its proper divisors (20152551).

27480645 is a wasteful number, since it uses less digits than its factorization.

27480645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610692 (or 610689 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 27480645 is about 5242.1984891837. The cubic root of 27480645 is about 301.7697066008.

The spelling of 27480645 in words is "twenty-seven million, four hundred eighty thousand, six hundred forty-five".