4645638 has 24 divisors (see below), whose sum is σ = 10232976. Its totient is φ = 1522800.

The previous prime is 4645637. The next prime is 4645639. The reversal of 4645638 is 8365464.

4645638 is a `hidden beast` number, since 4 + 645 + 6 + 3 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (4645637) and next prime (4645639).

It is a d-powerful number, because it can be written as 4³ + 6⁶ + 4⁹ + 5⁹ + 6⁷ + 3⁸ + 8⁷ .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4645631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1018 + ... + 3213.

It is an arithmetic number, because the mean of its divisors is an integer number (426374).

Almost surely, 2^4645638 is an apocalyptic number.

4645638 is an abundant number, since it is smaller than the sum of its proper divisors (5587338).

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

4645638 is a wasteful number, since it uses less digits than its factorization.

4645638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4300 (or 4297 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 4645638 is about 2155.3742134488. The cubic root of 4645638 is about 166.8585461200.

The spelling of 4645638 in words is "four million, six hundred forty-five thousand, six hundred thirty-eight".