3666630 has 64 divisors (see below), whose sum is σ = 9870336. Its totient is φ = 864000.

The previous prime is 3666629. The next prime is 3666647. The reversal of 3666630 is 366663.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a d-powerful number, because it can be written as 3 + 6⁵ + 6⁷ + 6⁸ + 6⁸ + 3⁹ + 0 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13395 + ... + 13665.

It is an arithmetic number, because the mean of its divisors is an integer number (154224).

Almost surely, 2^3666630 is an apocalyptic number.

3666630 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3666630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4935168).

3666630 is an abundant number, since it is smaller than the sum of its proper divisors (6203706).

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

3666630 is a wasteful number, since it uses less digits than its factorization.

3666630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333.

The product of its (nonzero) digits is 11664, while the sum is 30.

The square root of 3666630 is about 1914.8446412177. The cubic root of 3666630 is about 154.2016529638.

3666630 divided by its sum of digits (30) gives a palindrome (122221).

It can be divided in two parts, 366 and 6630, that added together give a palindrome (6996).

The spelling of 3666630 in words is "three million, six hundred sixty-six thousand, six hundred thirty".