3661900 has 36 divisors (see below), whose sum is σ = 8671320. Its totient is φ = 1331200.

The previous prime is 3661871. The next prime is 3661907. The reversal of 3661900 is 91663.

3661900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3661900² = 26819023220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (3661907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 565 + ... + 2764.

It is an arithmetic number, because the mean of its divisors is an integer number (240870).

Almost surely, 2^3661900 is an apocalyptic number.

It is an amenable number.

3661900 is an abundant number, since it is smaller than the sum of its proper divisors (5009420).

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

3661900 is a wasteful number, since it uses less digits than its factorization.

3661900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3354 (or 3347 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 3661900 is about 1913.6091554965. The cubic root of 3661900 is about 154.1353170571.

The spelling of 3661900 in words is "three million, six hundred sixty-one thousand, nine hundred".