1327551665 has 8 divisors (see below), whose sum is σ = 1737885888. Its totient is φ = 965492080.

The previous prime is 1327551661. The next prime is 1327551689. The reversal of 1327551665 is 5661557231.

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

It is not a de Polignac number, because 1327551665 - 2² = 1327551661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1327551661) 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, 12068597 + ... + 12068706.

It is an arithmetic number, because the mean of its divisors is an integer number (217235736).

Almost surely, 2^1327551665 is an apocalyptic number.

It is an amenable number.

1327551665 is a deficient number, since it is larger than the sum of its proper divisors (410334223).

1327551665 is a wasteful number, since it uses less digits than its factorization.

1327551665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24137319.

The product of its digits is 189000, while the sum is 41.

The square root of 1327551665 is about 36435.5824023714. The cubic root of 1327551665 is about 1099.0492238957.

The spelling of 1327551665 in words is "one billion, three hundred twenty-seven million, five hundred fifty-one thousand, six hundred sixty-five".