3661140 has 96 divisors (see below), whose sum is σ = 12257280. Its totient is φ = 798336.

The previous prime is 3661139. The next prime is 3661157. The reversal of 3661140 is 411663.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 9471 + ... + 9849.

It is an arithmetic number, because the mean of its divisors is an integer number (127680).

Almost surely, 2^3661140 is an apocalyptic number.

3661140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3661140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6128640).

3661140 is an abundant number, since it is smaller than the sum of its proper divisors (8596140).

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

3661140 is a wasteful number, since it uses less digits than its factorization.

3661140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 3661140 is about 1913.4105675469. The cubic root of 3661140 is about 154.1246531079.

The spelling of 3661140 in words is "three million, six hundred sixty-one thousand, one hundred forty".