5726649 has 4 divisors (see below), whose sum is σ = 7635536. Its totient is φ = 3817764.

The previous prime is 5726639. The next prime is 5726663. The reversal of 5726649 is 9466275.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5726649 - 2⁷ = 5726521 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5726629) 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 in 3 ways as a sum of consecutive naturals, for example, 954439 + ... + 954444.

It is an arithmetic number, because the mean of its divisors is an integer number (1908884).

Almost surely, 2^5726649 is an apocalyptic number.

It is an amenable number.

5726649 is a deficient number, since it is larger than the sum of its proper divisors (1908887).

5726649 is a wasteful number, since it uses less digits than its factorization.

5726649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908886.

The product of its digits is 90720, while the sum is 39.

The square root of 5726649 is about 2393.0417881851. The cubic root of 5726649 is about 178.9095493000.

The spelling of 5726649 in words is "five million, seven hundred twenty-six thousand, six hundred forty-nine".