3661420 has 24 divisors (see below), whose sum is σ = 8787744. Its totient is φ = 1255296.

The previous prime is 3661417. The next prime is 3661421. The reversal of 3661420 is 241663.

It is a junction number, because it is equal to n+sod(n) for n = 3661391 and 3661400.

It is not an unprimeable number, because it can be changed into a prime (3661421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12937 + ... + 13216.

It is an arithmetic number, because the mean of its divisors is an integer number (366156).

Almost surely, 2^3661420 is an apocalyptic number.

It is an amenable number.

3661420 is an abundant number, since it is smaller than the sum of its proper divisors (5126324).

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

3661420 is a wasteful number, since it uses less digits than its factorization.

3661420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26169 (or 26167 counting only the distinct ones).

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

The square root of 3661420 is about 1913.4837339262. The cubic root of 3661420 is about 154.1285821030.

The spelling of 3661420 in words is "three million, six hundred sixty-one thousand, four hundred twenty".