731056345646 has 8 divisors (see below), whose sum is σ = 1196274020184. Its totient is φ = 332298338920.

The previous prime is 731056345603. The next prime is 731056345693. The reversal of 731056345646 is 646543650137.

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

It is a junction number, because it is equal to n+sod(n) for n = 731056345594 and 731056345603.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 16614916925 + ... + 16614916968.

It is an arithmetic number, because the mean of its divisors is an integer number (149534252523).

Almost surely, 2^731056345646 is an apocalyptic number.

731056345646 is a deficient number, since it is larger than the sum of its proper divisors (465217674538).

731056345646 is a wasteful number, since it uses less digits than its factorization.

731056345646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33229833906.

The product of its (nonzero) digits is 5443200, while the sum is 50.

The spelling of 731056345646 in words is "seven hundred thirty-one billion, fifty-six million, three hundred forty-five thousand, six hundred forty-six".