3661746 has 32 divisors (see below), whose sum is σ = 8078400. Its totient is φ = 1097280.

The previous prime is 3661739. The next prime is 3661759. The reversal of 3661746 is 6471663.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6940 + ... + 7448.

It is an arithmetic number, because the mean of its divisors is an integer number (252450).

Almost surely, 2^3661746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3661746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4039200).

3661746 is an abundant number, since it is smaller than the sum of its proper divisors (4416654).

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

3661746 is a wasteful number, since it uses less digits than its factorization.

3661746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634.

The product of its digits is 18144, while the sum is 33.

The square root of 3661746 is about 1913.5689169716. The cubic root of 3661746 is about 154.1331563234.

It can be divided in two parts, 36617 and 46, that added together give a palindrome (36663).

The spelling of 3661746 in words is "three million, six hundred sixty-one thousand, seven hundred forty-six".