6723506 has 4 divisors (see below), whose sum is σ = 10085262. Its totient is φ = 3361752.

The previous prime is 6723503. The next prime is 6723533. The reversal of 6723506 is 6053276.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5480281 + 1243225 = 2341^2 + 1115^2 .

It is not an unprimeable number, because it can be changed into a prime (6723503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1680875 + ... + 1680878.

Almost surely, 2^6723506 is an apocalyptic number.

6723506 is a deficient number, since it is larger than the sum of its proper divisors (3361756).

6723506 is a wasteful number, since it uses less digits than its factorization.

6723506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3361755.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 6723506 is about 2592.9724256151. The cubic root of 6723506 is about 188.7405714338.

The spelling of 6723506 in words is "six million, seven hundred twenty-three thousand, five hundred six".