3661542 has 12 divisors (see below), whose sum is σ = 7933380. Its totient is φ = 1220508.

The previous prime is 3661529. The next prime is 3661543. The reversal of 3661542 is 2451663.

3661542 is a `hidden beast` number, since 3 + 6 + 615 + 42 = 666.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3661543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101692 + ... + 101727.

It is an arithmetic number, because the mean of its divisors is an integer number (661115).

Almost surely, 2^3661542 is an apocalyptic number.

3661542 is an abundant number, since it is smaller than the sum of its proper divisors (4271838).

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

3661542 is a wasteful number, since it uses less digits than its factorization.

3661542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203427 (or 203424 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 3661542 is about 1913.5156126878. The cubic root of 3661542 is about 154.1302939596.

The spelling of 3661542 in words is "three million, six hundred sixty-one thousand, five hundred forty-two".