1665333504 has 108 divisors (see below), whose sum is σ = 4817716176. Its totient is φ = 553245696.

The previous prime is 1665333433. The next prime is 1665333521. The reversal of 1665333504 is 4053335661.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 798447 + ... + 800529.

Almost surely, 2^1665333504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1665333504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2408858088).

1665333504 is an abundant number, since it is smaller than the sum of its proper divisors (3152382672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1665333504 is a wasteful number, since it uses less digits than its factorization.

1665333504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452 (or 2435 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

The square root of 1665333504 is about 40808.4979385422. The cubic root of 1665333504 is about 1185.3148893451.

The spelling of 1665333504 in words is "one billion, six hundred sixty-five million, three hundred thirty-three thousand, five hundred four".