3638573 has 2 divisors, whose sum is σ = 3638574. Its totient is φ = 3638572.

The previous prime is 3638549. The next prime is 3638639. The reversal of 3638573 is 3758363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3232804 + 405769 = 1798^2 + 637^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3638573 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 3 + 6⁸ + 3⁶ + 8³ + 5⁹ + 7⁴ + 3⁷ .

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3638513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1819286 + 1819287.

It is an arithmetic number, because the mean of its divisors is an integer number (1819287).

Almost surely, 2^3638573 is an apocalyptic number.

It is an amenable number.

3638573 is a deficient number, since it is larger than the sum of its proper divisors (1).

3638573 is an equidigital number, since it uses as much as digits as its factorization.

3638573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 35.

The square root of 3638573 is about 1907.5043905585. The cubic root of 3638573 is about 153.8073291838.

The spelling of 3638573 in words is "three million, six hundred thirty-eight thousand, five hundred seventy-three".