648743446 has 16 divisors (see below), whose sum is σ = 1063614384. Its totient is φ = 294950304.

The previous prime is 648743419. The next prime is 648743449. The reversal of 648743446 is 644347846.

It is a junction number, because it is equal to n+sod(n) for n = 648743396 and 648743405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648743449) 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 7 ways as a sum of consecutive naturals, for example, 184465 + ... + 187948.

It is an arithmetic number, because the mean of its divisors is an integer number (66475899).

Almost surely, 2^648743446 is an apocalyptic number.

648743446 is a deficient number, since it is larger than the sum of its proper divisors (414870938).

648743446 is a wasteful number, since it uses less digits than its factorization.

648743446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372495.

The product of its digits is 1548288, while the sum is 46.

The square root of 648743446 is about 25470.4425952907. The cubic root of 648743446 is about 865.6805523324.

The spelling of 648743446 in words is "six hundred forty-eight million, seven hundred forty-three thousand, four hundred forty-six".