726939625 has 8 divisors (see below), whose sum is σ = 907220808. Its totient is φ = 581551600.

The previous prime is 726939613. The next prime is 726939671. The reversal of 726939625 is 526939627.

It can be written as a sum of positive squares in 4 ways, for example, as 191850201 + 535089424 = 13851^2 + 23132^2 .

It is not a de Polignac number, because 726939625 - 2⁷ = 726939497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2907634 + ... + 2907883.

It is an arithmetic number, because the mean of its divisors is an integer number (113402601).

Almost surely, 2^726939625 is an apocalyptic number.

It is an amenable number.

726939625 is a deficient number, since it is larger than the sum of its proper divisors (180281183).

726939625 is an equidigital number, since it uses as much as digits as its factorization.

726939625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5815532 (or 5815522 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 49.

The square root of 726939625 is about 26961.8179097775. The cubic root of 726939625 is about 899.1513089979.

The spelling of 726939625 in words is "seven hundred twenty-six million, nine hundred thirty-nine thousand, six hundred twenty-five".