726646437 has 32 divisors (see below), whose sum is σ = 1175928960. Its totient is φ = 439810560.

The previous prime is 726646411. The next prime is 726646489. The reversal of 726646437 is 734646627.

It is not a de Polignac number, because 726646437 - 2⁶ = 726646373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 726646392 and 726646401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726646237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 359253 + ... + 361269.

It is an arithmetic number, because the mean of its divisors is an integer number (36747780).

Almost surely, 2^726646437 is an apocalyptic number.

It is an amenable number.

726646437 is a deficient number, since it is larger than the sum of its proper divisors (449282523).

726646437 is a wasteful number, since it uses less digits than its factorization.

726646437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250 (or 3244 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 45.

The square root of 726646437 is about 26956.3802651617. The cubic root of 726646437 is about 899.0304113728.

The spelling of 726646437 in words is "seven hundred twenty-six million, six hundred forty-six thousand, four hundred thirty-seven".