648727859 has 8 divisors (see below), whose sum is σ = 708201312. Its totient is φ = 590621760.

The previous prime is 648727847. The next prime is 648727867. The reversal of 648727859 is 958727846.

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 648727859 - 2⁴ = 648727843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (648727829) 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, 340847 + ... + 342744.

It is an arithmetic number, because the mean of its divisors is an integer number (88525164).

Almost surely, 2^648727859 is an apocalyptic number.

648727859 is a deficient number, since it is larger than the sum of its proper divisors (59473453).

648727859 is a wasteful number, since it uses less digits than its factorization.

648727859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683677.

The product of its digits is 6773760, while the sum is 56.

The square root of 648727859 is about 25470.1366113337. The cubic root of 648727859 is about 865.6736192009.

The spelling of 648727859 in words is "six hundred forty-eight million, seven hundred twenty-seven thousand, eight hundred fifty-nine".