3646812 has 48 divisors (see below), whose sum is σ = 9296672. Its totient is φ = 1105920.

The previous prime is 3646793. The next prime is 3646817. The reversal of 3646812 is 2186463.

It is a self number, because there is not a number n which added to its sum of digits gives 3646812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3646817) 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 15 ways as a sum of consecutive naturals, for example, 15012 + ... + 15252.

Almost surely, 2^3646812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3646812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4648336).

3646812 is an abundant number, since it is smaller than the sum of its proper divisors (5649860).

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

3646812 is a wasteful number, since it uses less digits than its factorization.

3646812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 356 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 3646812 is about 1909.6627974593. The cubic root of 3646812 is about 153.9233328397.

The spelling of 3646812 in words is "three million, six hundred forty-six thousand, eight hundred twelve".