7321613 has 16 divisors (see below), whose sum is σ = 8418816. Its totient is φ = 6314880.

The previous prime is 7321583. The next prime is 7321619. The reversal of 7321613 is 3161237.

It is a happy number.

It is not a de Polignac number, because 7321613 - 2⁸ = 7321357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7321619) 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 15 ways as a sum of consecutive naturals, for example, 13793 + ... + 14313.

It is an arithmetic number, because the mean of its divisors is an integer number (526176).

Almost surely, 2^7321613 is an apocalyptic number.

It is an amenable number.

7321613 is a deficient number, since it is larger than the sum of its proper divisors (1097203).

7321613 is a wasteful number, since it uses less digits than its factorization.

7321613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604.

The product of its digits is 756, while the sum is 23.

The square root of 7321613 is about 2705.8479262516. The cubic root of 7321613 is about 194.1789983592.

The spelling of 7321613 in words is "seven million, three hundred twenty-one thousand, six hundred thirteen".