7643533 has 2 divisors, whose sum is σ = 7643534. Its totient is φ = 7643532.

The previous prime is 7643473. The next prime is 7643539. The reversal of 7643533 is 3353467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4831204 + 2812329 = 2198^2 + 1677^2 .

It is a cyclic number.

It is not a de Polignac number, because 7643533 - 2⁹ = 7643021 is a prime.

It is a d-powerful number, because it can be written as 7⁸ + 6⁷ + 4⁶ + 3² + 5³ + 3⁵ + 3¹³ .

It is a junction number, because it is equal to n+sod(n) for n = 7643495 and 7643504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7643539) by changing a digit.

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 as a sum of consecutive naturals, namely, 3821766 + 3821767.

It is an arithmetic number, because the mean of its divisors is an integer number (3821767).

Almost surely, 2^7643533 is an apocalyptic number.

It is an amenable number.

7643533 is a deficient number, since it is larger than the sum of its proper divisors (1).

7643533 is an equidigital number, since it uses as much as digits as its factorization.

7643533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 31.

The square root of 7643533 is about 2764.6940156191. The cubic root of 7643533 is about 196.9841948377.

The spelling of 7643533 in words is "seven million, six hundred forty-three thousand, five hundred thirty-three".