27706545 has 24 divisors (see below), whose sum is σ = 48935016. Its totient is φ = 14496768.

The previous prime is 27706531. The next prime is 27706573. The reversal of 27706545 is 54560772.

It can be written as a sum of positive squares in 4 ways, for example, as 3381921 + 24324624 = 1839^2 + 4932^2 .

It is not a de Polignac number, because 27706545 - 2⁷ = 27706417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3424 + ... + 8193.

It is an arithmetic number, because the mean of its divisors is an integer number (2038959).

Almost surely, 2^27706545 is an apocalyptic number.

It is an amenable number.

27706545 is a deficient number, since it is larger than the sum of its proper divisors (21228471).

27706545 is a wasteful number, since it uses less digits than its factorization.

27706545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11681 (or 11678 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 27706545 is about 5263.7006943784. The cubic root of 27706545 is about 302.5943334417.

The spelling of 27706545 in words is "twenty-seven million, seven hundred six thousand, five hundred forty-five".