3421660 has 48 divisors (see below), whose sum is σ = 7967232. Its totient is φ = 1224000.

The previous prime is 3421657. The next prime is 3421661. The reversal of 3421660 is 661243.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3421661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22585 + ... + 22735.

It is an arithmetic number, because the mean of its divisors is an integer number (165984).

Almost surely, 2^3421660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3421660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3983616).

3421660 is an abundant number, since it is smaller than the sum of its proper divisors (4545572).

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

3421660 is a wasteful number, since it uses less digits than its factorization.

3421660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 3421660 is about 1849.7729590412. The cubic root of 3421660 is about 150.6880979077.

It can be divided in two parts, 342 and 1660, that added together give a palindrome (2002).

The spelling of 3421660 in words is "three million, four hundred twenty-one thousand, six hundred sixty".