27861097 has 6 divisors (see below), whose sum is σ = 30624314. Its totient is φ = 25328160.

The previous prime is 27861091. The next prime is 27861103. The reversal of 27861097 is 79016872.

It is an interprime number because it is at equal distance from previous prime (27861091) and next prime (27861103).

It can be written as a sum of positive squares in only one way, i.e., 18974736 + 8886361 = 4356^2 + 2981^2 .

It is not a de Polignac number, because 27861097 - 2¹⁹ = 27336809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27861091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115008 + ... + 115249.

Almost surely, 2^27861097 is an apocalyptic number.

It is an amenable number.

27861097 is a deficient number, since it is larger than the sum of its proper divisors (2763217).

27861097 is a wasteful number, since it uses less digits than its factorization.

27861097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230279 (or 230268 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 27861097 is about 5278.3612040102. The cubic root of 27861097 is about 303.1559320403.

It can be divided in two parts, 2786 and 1097, that added together give a palindrome (3883).

The spelling of 27861097 in words is "twenty-seven million, eight hundred sixty-one thousand, ninety-seven".