724425565661 has 8 divisors (see below), whose sum is σ = 827920201920. Its totient is φ = 620932246848.

The previous prime is 724425565649. The next prime is 724425565667. The reversal of 724425565661 is 166565524427.

724425565661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 724425565661 - 2¹⁰ = 724425564637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724425565667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1611170 + ... + 2011148.

It is an arithmetic number, because the mean of its divisors is an integer number (103490025240).

Almost surely, 2^724425565661 is an apocalyptic number.

It is an amenable number.

724425565661 is a deficient number, since it is larger than the sum of its proper divisors (103494636259).

724425565661 is a wasteful number, since it uses less digits than its factorization.

724425565661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658723.

The product of its digits is 12096000, while the sum is 53.

The spelling of 724425565661 in words is "seven hundred twenty-four billion, four hundred twenty-five million, five hundred sixty-five thousand, six hundred sixty-one".