3689694216 has 96 divisors (see below), whose sum is σ = 10964804760. Its totient is φ = 1113854976.

The previous prime is 3689694191. The next prime is 3689694233. The reversal of 3689694216 is 6124969863.

3689694216 is a `hidden beast` number, since 368 + 9 + 69 + 4 + 216 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1766520900 + 1923173316 = 42030^2 + 43854^2 .

It is a super-2 number, since 2×3689694216² = 27227686815167709312, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12420 + ... + 86796.

Almost surely, 2^3689694216 is an apocalyptic number.

3689694216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3689694216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5482402380).

3689694216 is an abundant number, since it is smaller than the sum of its proper divisors (7275110544).

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

3689694216 is a wasteful number, since it uses less digits than its factorization.

3689694216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74455 (or 74448 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The square root of 3689694216 is about 60742.8532092459. The cubic root of 3689694216 is about 1545.2430245792.

The spelling of 3689694216 in words is "three billion, six hundred eighty-nine million, six hundred ninety-four thousand, two hundred sixteen".