27740465 has 8 divisors (see below), whose sum is σ = 33916968. Its totient is φ = 21773440.

The previous prime is 27740459. The next prime is 27740467. The reversal of 27740465 is 56404772.

It can be written as a sum of positive squares in 4 ways, for example, as 2900209 + 24840256 = 1703^2 + 4984^2 .

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

It is not a de Polignac number, because 27740465 - 2¹⁰ = 27739441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27740467) 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, 52076 + ... + 52605.

It is an arithmetic number, because the mean of its divisors is an integer number (4239621).

Almost surely, 2^27740465 is an apocalyptic number.

It is an amenable number.

27740465 is a deficient number, since it is larger than the sum of its proper divisors (6176503).

27740465 is a wasteful number, since it uses less digits than its factorization.

27740465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104739.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 27740465 is about 5266.9217765218. The cubic root of 27740465 is about 302.7177677426.

The spelling of 27740465 in words is "twenty-seven million, seven hundred forty thousand, four hundred sixty-five".