727823645 has 16 divisors (see below), whose sum is σ = 881390592. Its totient is φ = 576949440.

The previous prime is 727823639. The next prime is 727823687. The reversal of 727823645 is 546328727.

It is not a de Polignac number, because 727823645 - 2⁶ = 727823581 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 727823596 and 727823605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268919 + ... + 271611.

It is an arithmetic number, because the mean of its divisors is an integer number (55086912).

Almost surely, 2^727823645 is an apocalyptic number.

It is an amenable number.

727823645 is a deficient number, since it is larger than the sum of its proper divisors (153566947).

727823645 is a wasteful number, since it uses less digits than its factorization.

727823645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3172.

The product of its digits is 564480, while the sum is 44.

The square root of 727823645 is about 26978.2068529397. The cubic root of 727823645 is about 899.5156426700.

The spelling of 727823645 in words is "seven hundred twenty-seven million, eight hundred twenty-three thousand, six hundred forty-five".