3569681 has 4 divisors (see below), whose sum is σ = 3684864. Its totient is φ = 3454500.

The previous prime is 3569653. The next prime is 3569707. The reversal of 3569681 is 1869653.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1869653 = 631 ⋅2963.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3569681 is a prime.

It is a super-2 number, since 2×3569681² = 25485244883522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3569611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57545 + ... + 57606.

It is an arithmetic number, because the mean of its divisors is an integer number (921216).

Almost surely, 2^3569681 is an apocalyptic number.

3569681 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3569681 is a deficient number, since it is larger than the sum of its proper divisors (115183).

3569681 is a wasteful number, since it uses less digits than its factorization.

3569681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115182.

The product of its digits is 38880, while the sum is 38.

The square root of 3569681 is about 1889.3599445315. The cubic root of 3569681 is about 152.8304185715.

The spelling of 3569681 in words is "three million, five hundred sixty-nine thousand, six hundred eighty-one".