7320013 has 4 divisors (see below), whose sum is σ = 7750620. Its totient is φ = 6889408.

The previous prime is 7320011. The next prime is 7320023. The reversal of 7320013 is 3100237.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2244004 + 5076009 = 1498^2 + 2253^2 .

It is a cyclic number.

It is not a de Polignac number, because 7320013 - 2¹ = 7320011 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 (7320011) 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, 215278 + ... + 215311.

It is an arithmetic number, because the mean of its divisors is an integer number (1937655).

Almost surely, 2^7320013 is an apocalyptic number.

It is an amenable number.

7320013 is a deficient number, since it is larger than the sum of its proper divisors (430607).

7320013 is a wasteful number, since it uses less digits than its factorization.

7320013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430606.

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 7320013 is about 2705.5522541618. The cubic root of 7320013 is about 194.1648526133.

The spelling of 7320013 in words is "seven million, three hundred twenty thousand, thirteen".