7872723 has 12 divisors (see below), whose sum is σ = 11401000. Its totient is φ = 5234976.

The previous prime is 7872679. The next prime is 7872731. The reversal of 7872723 is 3272787.

7872723 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7872723 - 2²¹ = 5775571 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

7872723 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7872763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3615 + ... + 5367.

Almost surely, 2^7872723 is an apocalyptic number.

7872723 is a deficient number, since it is larger than the sum of its proper divisors (3528277).

7872723 is a wasteful number, since it uses less digits than its factorization.

7872723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258 (or 2255 counting only the distinct ones).

The product of its digits is 32928, while the sum is 36.

The square root of 7872723 is about 2805.8373081845. The cubic root of 7872723 is about 198.9336832802.

The spelling of 7872723 in words is "seven million, eight hundred seventy-two thousand, seven hundred twenty-three".