605006721 has 48 divisors (see below), whose sum is σ = 1030760640. Its totient is φ = 337944960.

The previous prime is 605006711. The next prime is 605006741. The reversal of 605006721 is 127600506.

It is not a de Polignac number, because 605006721 - 2⁶ = 605006657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (605006711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65251 + ... + 73943.

It is an arithmetic number, because the mean of its divisors is an integer number (21474180).

Almost surely, 2^605006721 is an apocalyptic number.

It is an amenable number.

605006721 is a deficient number, since it is larger than the sum of its proper divisors (425753919).

605006721 is a wasteful number, since it uses less digits than its factorization.

605006721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8766 (or 8763 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 605006721 is about 24596.8843758717. The cubic root of 605006721 is about 845.7721877083.

The spelling of 605006721 in words is "six hundred five million, six thousand, seven hundred twenty-one".