423624645 has 12 divisors (see below), whose sum is σ = 734282796. Its totient is φ = 225933120.

The previous prime is 423624637. The next prime is 423624659. The reversal of 423624645 is 546426324.

423624645 is a `hidden beast` number, since 4 + 2 + 3 + 6 + 2 + 4 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 44076321 + 379548324 = 6639^2 + 19482^2 .

It is not a de Polignac number, because 423624645 - 2³ = 423624637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4706896 + ... + 4706985.

It is an arithmetic number, because the mean of its divisors is an integer number (61190233).

Almost surely, 2^423624645 is an apocalyptic number.

423624645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

423624645 is a deficient number, since it is larger than the sum of its proper divisors (310658151).

423624645 is a wasteful number, since it uses less digits than its factorization.

423624645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9413892 (or 9413889 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

The square root of 423624645 is about 20582.1438387744. The cubic root of 423624645 is about 751.0353966140.

The spelling of 423624645 in words is "four hundred twenty-three million, six hundred twenty-four thousand, six hundred forty-five".