7321768 has 8 divisors (see below), whose sum is σ = 13728330. Its totient is φ = 3660880.

The previous prime is 7321757. The next prime is 7321789. The reversal of 7321768 is 8671237.

It can be written as a sum of positive squares in only one way, i.e., 6646084 + 675684 = 2578^2 + 822^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 457603 + ... + 457618.

Almost surely, 2^7321768 is an apocalyptic number.

It is an amenable number.

7321768 is a deficient number, since it is larger than the sum of its proper divisors (6406562).

7321768 is a wasteful number, since it uses less digits than its factorization.

7321768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915227 (or 915223 counting only the distinct ones).

The product of its digits is 14112, while the sum is 34.

The square root of 7321768 is about 2705.8765677688. The cubic root of 7321768 is about 194.1803686189.

It can be divided in two parts, 732 and 1768, that added together give a square (2500 = 50²).

The spelling of 7321768 in words is "seven million, three hundred twenty-one thousand, seven hundred sixty-eight".