3605646420 has 48 divisors (see below), whose sum is σ = 11217568320. Its totient is φ = 961505568.

The previous prime is 3605646391. The next prime is 3605646431. The reversal of 3605646420 is 246465063.

3605646420 is a `hidden beast` number, since 3 + 6 + 0 + 5 + 6 + 4 + 642 + 0 = 666.

It is a super-2 number, since 2×3605646420² = 26001372212117632800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3338022 + ... + 3339101.

It is an arithmetic number, because the mean of its divisors is an integer number (233699340).

Almost surely, 2^3605646420 is an apocalyptic number.

3605646420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3605646420 is an abundant number, since it is smaller than the sum of its proper divisors (7611921900).

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

3605646420 is a wasteful number, since it uses less digits than its factorization.

3605646420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6677141 (or 6677133 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 3605646420 is about 60047.0350641895. The cubic root of 3605646420 is about 1533.4197249161.

The spelling of 3605646420 in words is "three billion, six hundred five million, six hundred forty-six thousand, four hundred twenty".