731445495606 has 144 divisors (see below), whose sum is σ = 1865724775200. Its totient is φ = 206480606976.

The previous prime is 731445495581. The next prime is 731445495607. The reversal of 731445495606 is 606594544137.

It is a happy number.

731445495606 is a `hidden beast` number, since 7 + 3 + 1 + 44 + 549 + 56 + 0 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731445495607) 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 71 ways as a sum of consecutive naturals, for example, 34502946 + ... + 34524138.

It is an arithmetic number, because the mean of its divisors is an integer number (12956422050).

Almost surely, 2^731445495606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 731445495606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (932862387600).

731445495606 is an abundant number, since it is smaller than the sum of its proper divisors (1134279279594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

731445495606 is a wasteful number, since it uses less digits than its factorization.

731445495606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21683 (or 21673 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 54.

The spelling of 731445495606 in words is "seven hundred thirty-one billion, four hundred forty-five million, four hundred ninety-five thousand, six hundred six".