7316921 has 4 divisors (see below), whose sum is σ = 7635072. Its totient is φ = 6998772.

The previous prime is 7316917. The next prime is 7316927. The reversal of 7316921 is 1296137.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7316921 - 2² = 7316917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7316927) 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, 159041 + ... + 159086.

It is an arithmetic number, because the mean of its divisors is an integer number (1908768).

Almost surely, 2^7316921 is an apocalyptic number.

It is an amenable number.

7316921 is a deficient number, since it is larger than the sum of its proper divisors (318151).

7316921 is a wasteful number, since it uses less digits than its factorization.

7316921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318150.

The product of its digits is 2268, while the sum is 29.

The square root of 7316921 is about 2704.9807762718. The cubic root of 7316921 is about 194.1375101175.

The spelling of 7316921 in words is "seven million, three hundred sixteen thousand, nine hundred twenty-one".