6726249 has 6 divisors (see below), whose sum is σ = 9715706. Its totient is φ = 4484160.

The previous prime is 6726241. The next prime is 6726257. The reversal of 6726249 is 9426276.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6726241) and next prime (6726257).

It can be written as a sum of positive squares in only one way, i.e., 4652649 + 2073600 = 2157^2 + 1440^2 .

It is not a de Polignac number, because 6726249 - 2³ = 6726241 is a prime.

It is a super-2 number, since 2×6726249² = 90484851220002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6726241) 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 5 ways as a sum of consecutive naturals, for example, 373672 + ... + 373689.

Almost surely, 2^6726249 is an apocalyptic number.

It is an amenable number.

6726249 is a deficient number, since it is larger than the sum of its proper divisors (2989457).

6726249 is a wasteful number, since it uses less digits than its factorization.

6726249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747367 (or 747364 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 6726249 is about 2593.5013013299. The cubic root of 6726249 is about 188.7662348797.

The spelling of 6726249 in words is "six million, seven hundred twenty-six thousand, two hundred forty-nine".