4512645 has 16 divisors (see below), whose sum is σ = 8022720. Its totient is φ = 2406672.

The previous prime is 4512619. The next prime is 4512653. The reversal of 4512645 is 5462154.

4512645 is a `hidden beast` number, since 4 + 5 + 12 + 645 = 666.

It is not a de Polignac number, because 4512645 - 2⁹ = 4512133 is a prime.

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 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, 16579 + ... + 16848.

It is an arithmetic number, because the mean of its divisors is an integer number (501420).

Almost surely, 2^4512645 is an apocalyptic number.

4512645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4512645 is a deficient number, since it is larger than the sum of its proper divisors (3510075).

4512645 is a wasteful number, since it uses less digits than its factorization.

4512645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33441 (or 33435 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 4512645 is about 2124.2987078092. The cubic root of 4512645 is about 165.2508580835.

Adding to 4512645 its reverse (5462154), we get a palindrome (9974799).

The spelling of 4512645 in words is "four million, five hundred twelve thousand, six hundred forty-five".