7505663 has 4 divisors (see below), whose sum is σ = 8188008. Its totient is φ = 6823320.

The previous prime is 7505657. The next prime is 7505669. The reversal of 7505663 is 3665057.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3665057 = 11 ⋅333187.

It is an interprime number because it is at equal distance from previous prime (7505657) and next prime (7505669).

It is a cyclic number.

It is not a de Polignac number, because 7505663 - 2⁴ = 7505647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7505669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341156 + ... + 341177.

It is an arithmetic number, because the mean of its divisors is an integer number (2047002).

Almost surely, 2^7505663 is an apocalyptic number.

7505663 is a deficient number, since it is larger than the sum of its proper divisors (682345).

7505663 is a wasteful number, since it uses less digits than its factorization.

7505663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682344.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 7505663 is about 2739.6465100447. The cubic root of 7505663 is about 195.7926360982.

Subtracting from 7505663 its reverse (3665057), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 7505663 in words is "seven million, five hundred five thousand, six hundred sixty-three".