3643542 has 96 divisors (see below), whose sum is σ = 10095840. Its totient is φ = 979776.

The previous prime is 3643537. The next prime is 3643561. The reversal of 3643542 is 2453463.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (8640) is a multiple of the sum of its prime factors (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 214318 + ... + 214334.

It is an arithmetic number, because the mean of its divisors is an integer number (105165).

Almost surely, 2^3643542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3643542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5047920).

3643542 is an abundant number, since it is smaller than the sum of its proper divisors (6452298).

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

3643542 is an equidigital number, since it uses as much as digits as its factorization.

3643542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54 (or 29 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 3643542 is about 1908.8064333504. The cubic root of 3643542 is about 153.8773127530.

It can be divided in two parts, 3 and 643542, that added together give a triangular number (643545 = T₁₁₃₄).

The spelling of 3643542 in words is "three million, six hundred forty-three thousand, five hundred forty-two".