7216775 has 12 divisors (see below), whose sum is σ = 9023232. Its totient is φ = 5725440.

The previous prime is 7216763. The next prime is 7216787. The reversal of 7216775 is 5776127.

It is an interprime number because it is at equal distance from previous prime (7216763) and next prime (7216787).

It is not a de Polignac number, because 7216775 - 2⁶ = 7216711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2039 + ... + 4311.

It is an arithmetic number, because the mean of its divisors is an integer number (751936).

Almost surely, 2^7216775 is an apocalyptic number.

7216775 is a deficient number, since it is larger than the sum of its proper divisors (1806457).

7216775 is a wasteful number, since it uses less digits than its factorization.

7216775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2410 (or 2405 counting only the distinct ones).

The product of its digits is 20580, while the sum is 35.

The square root of 7216775 is about 2686.4055911199. The cubic root of 7216775 is about 193.2477243514.

The spelling of 7216775 in words is "seven million, two hundred sixteen thousand, seven hundred seventy-five".