3659742 has 80 divisors (see below), whose sum is σ = 9147600. Its totient is φ = 1088640.

The previous prime is 3659717. The next prime is 3659779. The reversal of 3659742 is 2479563.

It is a junction number, because it is equal to n+sod(n) for n = 3659697 and 3659706.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 89242 + ... + 89282.

It is an arithmetic number, because the mean of its divisors is an integer number (114345).

Almost surely, 2^3659742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3659742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4573800).

3659742 is an abundant number, since it is smaller than the sum of its proper divisors (5487858).

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

3659742 is a wasteful number, since it uses less digits than its factorization.

3659742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 94 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 3659742 is about 1913.0452164024. The cubic root of 3659742 is about 154.1050331994.

The spelling of 3659742 in words is "three million, six hundred fifty-nine thousand, seven hundred forty-two".