3646020 has 48 divisors (see below), whose sum is σ = 11668608. Its totient is φ = 833280.

The previous prime is 3646009. The next prime is 3646021. The reversal of 3646020 is 206463.

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

It is not an unprimeable number, because it can be changed into a prime (3646021) 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, 3921 + ... + 4760.

It is an arithmetic number, because the mean of its divisors is an integer number (243096).

Almost surely, 2^3646020 is an apocalyptic number.

3646020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3646020 is an abundant number, since it is smaller than the sum of its proper divisors (8022588).

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

3646020 is a wasteful number, since it uses less digits than its factorization.

3646020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8700 (or 8698 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 3646020 is about 1909.4554197467. The cubic root of 3646020 is about 153.9121892157.

It can be divided in two parts, 36 and 46020, that added together give a triangular number (46056 = T₃₀₃).

The spelling of 3646020 in words is "three million, six hundred forty-six thousand, twenty".