3557642 has 24 divisors (see below), whose sum is σ = 5986596. Its totient is φ = 1584000.

The previous prime is 3557639. The next prime is 3557647. The reversal of 3557642 is 2467553.

It can be written as a sum of positive squares in 2 ways, for example, as 3455881 + 101761 = 1859^2 + 319^2 .

It is a d-powerful number, because it can be written as 3¹³ + 5 + 5⁹ + 7⁴ + 6⁵ + 4 + 2³ .

Its product of digits (25200) is a multiple of the sum of its prime divisors (315).

It is a junction number, because it is equal to n+sod(n) for n = 3557599 and 3557608.

It is not an unprimeable number, because it can be changed into a prime (3557647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14642 + ... + 14882.

Almost surely, 2^3557642 is an apocalyptic number.

3557642 is a deficient number, since it is larger than the sum of its proper divisors (2428954).

3557642 is a wasteful number, since it uses less digits than its factorization.

3557642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 315 counting only the distinct ones).

The product of its digits is 25200, while the sum is 32.

The square root of 3557642 is about 1886.1712541548. The cubic root of 3557642 is about 152.6584146194.

It can be divided in two parts, 355 and 7642, that added together give a palindrome (7997).

The spelling of 3557642 in words is "three million, five hundred fifty-seven thousand, six hundred forty-two".