7376721 has 16 divisors (see below), whose sum is σ = 11197440. Its totient is φ = 4275920.

The previous prime is 7376713. The next prime is 7376773. The reversal of 7376721 is 1276737.

It is not a de Polignac number, because 7376721 - 2³ = 7376713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an Ulam number.

7376721 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7376021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4101 + ... + 5618.

It is an arithmetic number, because the mean of its divisors is an integer number (699840).

Almost surely, 2^7376721 is an apocalyptic number.

It is an amenable number.

7376721 is a deficient number, since it is larger than the sum of its proper divisors (3820719).

7376721 is a wasteful number, since it uses less digits than its factorization.

7376721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9756.

The product of its digits is 12348, while the sum is 33.

The square root of 7376721 is about 2716.0119661003. The cubic root of 7376721 is about 194.6649605129.

The spelling of 7376721 in words is "seven million, three hundred seventy-six thousand, seven hundred twenty-one".