3661902 has 32 divisors (see below), whose sum is σ = 8618400. Its totient is φ = 1148544.

The previous prime is 3661871. The next prime is 3661907. The reversal of 3661902 is 2091663.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3661907) 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, 1077 + ... + 2912.

It is an arithmetic number, because the mean of its divisors is an integer number (269325).

Almost surely, 2^3661902 is an apocalyptic number.

3661902 is an abundant number, since it is smaller than the sum of its proper divisors (4956498).

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

3661902 is a wasteful number, since it uses less digits than its factorization.

3661902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4017 (or 4011 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 3661902 is about 1913.6096780692. The cubic root of 3661902 is about 154.1353451181.

The spelling of 3661902 in words is "three million, six hundred sixty-one thousand, nine hundred two".