1645326 has 16 divisors (see below), whose sum is σ = 3656400. Its totient is φ = 548424.

The previous prime is 1645291. The next prime is 1645327. The reversal of 1645326 is 6235461.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1645326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15181 + ... + 15288.

It is an arithmetic number, because the mean of its divisors is an integer number (228525).

2^1645326 is an apocalyptic number.

1645326 is an abundant number, since it is smaller than the sum of its proper divisors (2011074).

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

1645326 is a wasteful number, since it uses less digits than its factorization.

1645326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30480 (or 30474 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 1645326 is about 1282.7026155739. The cubic root of 1645326 is about 118.0548916308.

The spelling of 1645326 in words is "one million, six hundred forty-five thousand, three hundred twenty-six".