3645420 has 24 divisors (see below), whose sum is σ = 10207344. Its totient is φ = 972096.

The previous prime is 3645419. The next prime is 3645449. The reversal of 3645420 is 245463.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30319 + ... + 30438.

It is an arithmetic number, because the mean of its divisors is an integer number (425306).

Almost surely, 2^3645420 is an apocalyptic number.

3645420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3645420 is an abundant number, since it is smaller than the sum of its proper divisors (6561924).

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

3645420 is a wasteful number, since it uses less digits than its factorization.

3645420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60769 (or 60767 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 3645420 is about 1909.2983004235. The cubic root of 3645420 is about 153.9037460018.

The spelling of 3645420 in words is "three million, six hundred forty-five thousand, four hundred twenty".