7320563 has 4 divisors (see below), whose sum is σ = 7361640. Its totient is φ = 7279488.

The previous prime is 7320553. The next prime is 7320589. The reversal of 7320563 is 3650237.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7320563 - 2¹⁸ = 7058419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7320503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20270 + ... + 20627.

It is an arithmetic number, because the mean of its divisors is an integer number (1840410).

Almost surely, 2^7320563 is an apocalyptic number.

7320563 is a deficient number, since it is larger than the sum of its proper divisors (41077).

7320563 is a wasteful number, since it uses less digits than its factorization.

7320563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41076.

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 7320563 is about 2705.6538950871. The cubic root of 7320563 is about 194.1697154460.

The spelling of 7320563 in words is "seven million, three hundred twenty thousand, five hundred sixty-three".