7369721 has 4 divisors (see below), whose sum is σ = 7803252. Its totient is φ = 6936192.

The previous prime is 7369711. The next prime is 7369751. The reversal of 7369721 is 1279637.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1279637 = 43 ⋅29759.

It can be written as a sum of positive squares in 2 ways, for example, as 3759721 + 3610000 = 1939^2 + 1900^2 .

It is a cyclic number.

It is not a de Polignac number, because 7369721 - 2⁶ = 7369657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7369711) 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, 216740 + ... + 216773.

It is an arithmetic number, because the mean of its divisors is an integer number (1950813).

Almost surely, 2^7369721 is an apocalyptic number.

It is an amenable number.

7369721 is a deficient number, since it is larger than the sum of its proper divisors (433531).

7369721 is a wasteful number, since it uses less digits than its factorization.

7369721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433530.

The product of its digits is 15876, while the sum is 35.

The square root of 7369721 is about 2714.7230061279. The cubic root of 7369721 is about 194.6033664807.

The spelling of 7369721 in words is "seven million, three hundred sixty-nine thousand, seven hundred twenty-one".