3661002 has 48 divisors (see below), whose sum is σ = 8536320. Its totient is φ = 1130976.

The previous prime is 3660961. The next prime is 3661019. The reversal of 3661002 is 2001663.

It is a happy number.

3661002 is a `hidden beast` number, since 3 + 661 + 0 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15199 + ... + 15437.

It is an arithmetic number, because the mean of its divisors is an integer number (177840).

Almost surely, 2^3661002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3661002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4268160).

3661002 is an abundant number, since it is smaller than the sum of its proper divisors (4875318).

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

3661002 is a wasteful number, since it uses less digits than its factorization.

3661002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 3661002 is about 1913.3745059449. The cubic root of 3661002 is about 154.1227166010.

Adding to 3661002 its reverse (2001663), we get a palindrome (5662665).

The spelling of 3661002 in words is "three million, six hundred sixty-one thousand, two".