7320643 has 8 divisors (see below), whose sum is σ = 8406720. Its totient is φ = 6304680.

The previous prime is 7320637. The next prime is 7320653. The reversal of 7320643 is 3460237.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7320643 - 2¹⁷ = 7189571 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 (7320623) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17305 + ... + 17722.

It is an arithmetic number, because the mean of its divisors is an integer number (1050840).

Almost surely, 2^7320643 is an apocalyptic number.

7320643 is a deficient number, since it is larger than the sum of its proper divisors (1086077).

7320643 is a wasteful number, since it uses less digits than its factorization.

7320643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35057.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 7320643 is about 2705.6686789036. The cubic root of 7320643 is about 194.1704227468.

The spelling of 7320643 in words is "seven million, three hundred twenty thousand, six hundred forty-three".