6540723 has 16 divisors (see below), whose sum is σ = 11074560. Its totient is φ = 3737448.

The previous prime is 6540719. The next prime is 6540739. The reversal of 6540723 is 3270456.

It is a happy number.

6540723 is a `hidden beast` number, since 654 + 0 + 7 + 2 + 3 = 666.

It is not a de Polignac number, because 6540723 - 2² = 6540719 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 6⁸ + 5⁷ + 4 + 0 + 7 + 2 + 3¹⁴ .

It is not an unprimeable number, because it can be changed into a prime (6540323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17115 + ... + 17492.

It is an arithmetic number, because the mean of its divisors is an integer number (692160).

Almost surely, 2^6540723 is an apocalyptic number.

6540723 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

6540723 is a deficient number, since it is larger than the sum of its proper divisors (4533837).

6540723 is a wasteful number, since it uses less digits than its factorization.

6540723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34623 (or 34617 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 6540723 is about 2557.4837242884. The cubic root of 6540723 is about 187.0144879011.

The spelling of 6540723 in words is "six million, five hundred forty thousand, seven hundred twenty-three".