3645822 has 32 divisors (see below), whose sum is σ = 7879680. Its totient is φ = 1121120.

The previous prime is 3645809. The next prime is 3645823. The reversal of 3645822 is 2285463.

It is a d-powerful number, because it can be written as 3¹³ + 6 + 4⁷ + 5⁹ + 8² + 2¹⁴ + 2¹⁶ .

It is a self number, because there is not a number n which added to its sum of digits gives 3645822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645823) 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, 3547 + ... + 4457.

It is an arithmetic number, because the mean of its divisors is an integer number (246240).

Almost surely, 2^3645822 is an apocalyptic number.

3645822 is an abundant number, since it is smaller than the sum of its proper divisors (4233858).

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

3645822 is a wasteful number, since it uses less digits than its factorization.

3645822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968.

The product of its digits is 11520, while the sum is 30.

The square root of 3645822 is about 1909.4035717993. The cubic root of 3645822 is about 153.9094030575.

The spelling of 3645822 in words is "three million, six hundred forty-five thousand, eight hundred twenty-two".