424645 has 16 divisors (see below), whose sum is σ = 564480. Its totient is φ = 304704.

The previous prime is 424639. The next prime is 424661. The reversal of 424645 is 546424.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424645 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 4² + 2³ + 6⁷ + 4⁵ + 4⁸ + 5⁷ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2986 + ... + 3124.

It is an arithmetic number, because the mean of its divisors is an integer number (35280).

2⁴²⁴⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

424645 is a deficient number, since it is larger than the sum of its proper divisors (139835).

424645 is a wasteful number, since it uses less digits than its factorization.

424645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204.

The product of its digits is 3840, while the sum is 25.

The square root of 424645 is about 651.6479110685. The cubic root of 424645 is about 75.1637901914.

It can be divided in two parts, 4 and 24645, that added together give a square (24649 = 157²).

The spelling of 424645 in words is "four hundred twenty-four thousand, six hundred forty-five".