1632645 has 48 divisors (see below), whose sum is σ = 3324672. Its totient is φ = 725760.

The previous prime is 1632637. The next prime is 1632647. The reversal of 1632645 is 5462361.

1632645 is a `hidden beast` number, since 16 + 3 + 2 + 645 = 666.

It is not a de Polignac number, because 1632645 - 2³ = 1632637 is a prime.

It is a d-powerful number, because it can be written as 1 + 6² + 3¹³ + 2¹⁵ + 6⁴ + 4⁶ + 5³ .

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1632647) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22329 + ... + 22401.

It is an arithmetic number, because the mean of its divisors is an integer number (69264).

2^1632645 is an apocalyptic number.

1632645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1632645 is an abundant number, since it is smaller than the sum of its proper divisors (1692027).

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

1632645 is a wasteful number, since it uses less digits than its factorization.

1632645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 159 counting only the distinct ones).

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

The square root of 1632645 is about 1277.7499755429. The cubic root of 1632645 is about 117.7508147671.

The spelling of 1632645 in words is "one million, six hundred thirty-two thousand, six hundred forty-five".