1665084856 has 48 divisors (see below), whose sum is σ = 3333171600. Its totient is φ = 777103104.

The previous prime is 1665084847. The next prime is 1665084881. The reversal of 1665084856 is 6584805661.

It is a super-3 number, since 3×1665084856³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3792685 + ... + 3793123.

It is an arithmetic number, because the mean of its divisors is an integer number (69441075).

Almost surely, 2^1665084856 is an apocalyptic number.

It is an amenable number.

1665084856 is an abundant number, since it is smaller than the sum of its proper divisors (1668086744).

1665084856 is a wasteful number, since it uses less digits than its factorization.

1665084856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 49.

The square root of 1665084856 is about 40805.4513024914. The cubic root of 1665084856 is about 1185.2558939856.

The spelling of 1665084856 in words is "one billion, six hundred sixty-five million, eighty-four thousand, eight hundred fifty-six".