3658860 has 36 divisors (see below), whose sum is σ = 11099088. Its totient is φ = 975648.

The previous prime is 3658847. The next prime is 3658867. The reversal of 3658860 is 688563.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (3658867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9984 + ... + 10343.

It is an arithmetic number, because the mean of its divisors is an integer number (308308).

Almost surely, 2^3658860 is an apocalyptic number.

3658860 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3658860 is an abundant number, since it is smaller than the sum of its proper divisors (7440228).

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

3658860 is a wasteful number, since it uses less digits than its factorization.

3658860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20342 (or 20337 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 3658860 is about 1912.8146799939. The cubic root of 3658860 is about 154.0926524032.

The spelling of 3658860 in words is "three million, six hundred fifty-eight thousand, eight hundred sixty".