6723745 has 16 divisors (see below), whose sum is σ = 9520128. Its totient is φ = 4461120.

The previous prime is 6723733. The next prime is 6723757. The reversal of 6723745 is 5473276.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6723733) and next prime (6723757).

It is not a de Polignac number, because 6723745 - 2⁷ = 6723617 is a prime.

It is a Duffinian number.

6723745 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6723745.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2014 + ... + 4183.

It is an arithmetic number, because the mean of its divisors is an integer number (595008).

Almost surely, 2^6723745 is an apocalyptic number.

It is an amenable number.

6723745 is a deficient number, since it is larger than the sum of its proper divisors (2796383).

6723745 is a wasteful number, since it uses less digits than its factorization.

6723745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6240.

The product of its digits is 35280, while the sum is 34.

The square root of 6723745 is about 2593.0185113107. The cubic root of 6723745 is about 188.7428077899.

The spelling of 6723745 in words is "six million, seven hundred twenty-three thousand, seven hundred forty-five".