3553664 has 16 divisors (see below), whose sum is σ = 7079820. Its totient is φ = 1776768.

The previous prime is 3553601. The next prime is 3553673. The reversal of 3553664 is 4663553.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a d-powerful number, because it can be written as 3⁵ + 5⁵ + 5⁹ + 3¹³ + 6⁴ + 6⁴ + 4⁴ .

It is a self number, because there is not a number n which added to its sum of digits gives 3553664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13754 + ... + 14009.

Almost surely, 2^3553664 is an apocalyptic number.

It is an amenable number.

3553664 is a deficient number, since it is larger than the sum of its proper divisors (3526156).

3553664 is an equidigital number, since it uses as much as digits as its factorization.

3553664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27777 (or 27765 counting only the distinct ones).

The product of its digits is 32400, while the sum is 32.

The square root of 3553664 is about 1885.1164420269. The cubic root of 3553664 is about 152.6014947403.

The spelling of 3553664 in words is "three million, five hundred fifty-three thousand, six hundred sixty-four".