648956447 has 8 divisors (see below), whose sum is σ = 651904896. Its totient is φ = 646015392.

The previous prime is 648956437. The next prime is 648956467. The reversal of 648956447 is 744659846.

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 648956447 - 2¹⁰ = 648955423 is a prime.

It is a super-2 number, since 2×648956447² = 842288940205727618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648956437) 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, 239633 + ... + 242325.

It is an arithmetic number, because the mean of its divisors is an integer number (81488112).

Almost surely, 2^648956447 is an apocalyptic number.

648956447 is a deficient number, since it is larger than the sum of its proper divisors (2948449).

648956447 is a wasteful number, since it uses less digits than its factorization.

648956447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3697.

The product of its digits is 5806080, while the sum is 53.

The square root of 648956447 is about 25474.6235889758. The cubic root of 648956447 is about 865.7752845145.

The spelling of 648956447 in words is "six hundred forty-eight million, nine hundred fifty-six thousand, four hundred forty-seven".