27613261 has 8 divisors (see below), whose sum is σ = 29817144. Its totient is φ = 25420800.

The previous prime is 27613259. The next prime is 27613277. The reversal of 27613261 is 16231672.

It can be written as a sum of positive squares in 4 ways, for example, as 11764900 + 15848361 = 3430^2 + 3981^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 27613261 - 2¹ = 27613259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27613231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2565 + ... + 7861.

It is an arithmetic number, because the mean of its divisors is an integer number (3727143).

Almost surely, 2^27613261 is an apocalyptic number.

It is an amenable number.

27613261 is a deficient number, since it is larger than the sum of its proper divisors (2203883).

27613261 is a wasteful number, since it uses less digits than its factorization.

27613261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5711.

The product of its digits is 3024, while the sum is 28.

The square root of 27613261 is about 5254.8321571673. The cubic root of 27613261 is about 302.2543542275.

The spelling of 27613261 in words is "twenty-seven million, six hundred thirteen thousand, two hundred sixty-one".