3556689 has 8 divisors (see below), whose sum is σ = 5021280. Its totient is φ = 2231616.

The previous prime is 3556687. The next prime is 3556691. The reversal of 3556689 is 9866553.

It is an interprime number because it is at equal distance from previous prime (3556687) and next prime (3556691).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3556689 - 2¹ = 3556687 is a prime.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 3556689.

It is not an unprimeable number, because it can be changed into a prime (3556681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34819 + ... + 34920.

It is an arithmetic number, because the mean of its divisors is an integer number (627660).

Almost surely, 2^3556689 is an apocalyptic number.

It is an amenable number.

3556689 is a deficient number, since it is larger than the sum of its proper divisors (1464591).

3556689 is a wasteful number, since it uses less digits than its factorization.

3556689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69759.

The product of its digits is 194400, while the sum is 42.

The square root of 3556689 is about 1885.9186090603. The cubic root of 3556689 is about 152.6447823257.

The spelling of 3556689 in words is "three million, five hundred fifty-six thousand, six hundred eighty-nine".