1665832087 has 8 divisors (see below), whose sum is σ = 1770870960. Its totient is φ = 1562529600.

The previous prime is 1665832079. The next prime is 1665832099. The reversal of 1665832087 is 7802385661.

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

It is not a de Polignac number, because 1665832087 - 2³ = 1665832079 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 (1665832037) 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, 432118 + ... + 435955.

It is an arithmetic number, because the mean of its divisors is an integer number (221358870).

Almost surely, 2^1665832087 is an apocalyptic number.

1665832087 is a deficient number, since it is larger than the sum of its proper divisors (105038873).

1665832087 is a wasteful number, since it uses less digits than its factorization.

1665832087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868193.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 1665832087 is about 40814.6062948058. The cubic root of 1665832087 is about 1185.4331677328.

The spelling of 1665832087 in words is "one billion, six hundred sixty-five million, eight hundred thirty-two thousand, eighty-seven".