1684755804 has 12 divisors (see below), whose sum is σ = 3931096904. Its totient is φ = 561585264.

The previous prime is 1684755769. The next prime is 1684755901. The reversal of 1684755804 is 4085574861.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×1684755804³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70198147 + ... + 70198170.

Almost surely, 2^1684755804 is an apocalyptic number.

It is an amenable number.

1684755804 is an abundant number, since it is smaller than the sum of its proper divisors (2246341100).

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

1684755804 is a wasteful number, since it uses less digits than its factorization.

1684755804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140396324 (or 140396322 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 48.

The square root of 1684755804 is about 41045.7769325908. The cubic root of 1684755804 is about 1189.9050848196.

The spelling of 1684755804 in words is "one billion, six hundred eighty-four million, seven hundred fifty-five thousand, eight hundred four".