3666690 has 48 divisors (see below), whose sum is σ = 9637056. Its totient is φ = 967200.

The previous prime is 3666661. The next prime is 3666703. The reversal of 3666690 is 966663.

It is a super-2 number, since 2×3666690² = 26889231112200, which contains 22 as substring.

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, 11635 + ... + 11945.

It is an arithmetic number, because the mean of its divisors is an integer number (200772).

Almost surely, 2^3666690 is an apocalyptic number.

3666690 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 3666690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4818528).

3666690 is an abundant number, since it is smaller than the sum of its proper divisors (5970366).

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

3666690 is a wasteful number, since it uses less digits than its factorization.

3666690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455 (or 452 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 3666690 is about 1914.8603082209. The cubic root of 3666690 is about 154.2024940676.

It can be divided in two parts, 3666 and 690, that added together give a square (4356 = 66²).

The spelling of 3666690 in words is "three million, six hundred sixty-six thousand, six hundred ninety".