7321716 has 18 divisors (see below), whose sum is σ = 18507762. Its totient is φ = 2440560.

The previous prime is 7321709. The next prime is 7321729. The reversal of 7321716 is 6171237.

It can be written as a sum of positive squares in only one way, i.e., 6022116 + 1299600 = 2454^2 + 1140^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 7321716.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101655 + ... + 101726.

It is an arithmetic number, because the mean of its divisors is an integer number (1028209).

Almost surely, 2^7321716 is an apocalyptic number.

It is an amenable number.

7321716 is an abundant number, since it is smaller than the sum of its proper divisors (11186046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7321716 is a wasteful number, since it uses less digits than its factorization.

7321716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203391 (or 203386 counting only the distinct ones).

The product of its digits is 1764, while the sum is 27.

The square root of 7321716 is about 2705.8669590355. The cubic root of 7321716 is about 194.1799089210.

The spelling of 7321716 in words is "seven million, three hundred twenty-one thousand, seven hundred sixteen".