7269721 has 4 divisors (see below), whose sum is σ = 7357392. Its totient is φ = 7182052.

The previous prime is 7269719. The next prime is 7269733. The reversal of 7269721 is 1279627.

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 7269721 - 2¹ = 7269719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7269781) 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, 43711 + ... + 43876.

It is an arithmetic number, because the mean of its divisors is an integer number (1839348).

Almost surely, 2^7269721 is an apocalyptic number.

It is an amenable number.

7269721 is a deficient number, since it is larger than the sum of its proper divisors (87671).

7269721 is an equidigital number, since it uses as much as digits as its factorization.

7269721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87670.

The product of its digits is 10584, while the sum is 34.

The square root of 7269721 is about 2696.2420143600. The cubic root of 7269721 is about 193.7191617933.

The spelling of 7269721 in words is "seven million, two hundred sixty-nine thousand, seven hundred twenty-one".