648883091 has 8 divisors (see below), whose sum is σ = 671642400. Its totient is φ = 626149440.

The previous prime is 648883087. The next prime is 648883099. The reversal of 648883091 is 190388846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 648883091 - 2² = 648883087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648883099) 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, 55226 + ... + 65936.

It is an arithmetic number, because the mean of its divisors is an integer number (83955300).

Almost surely, 2^648883091 is an apocalyptic number.

648883091 is a deficient number, since it is larger than the sum of its proper divisors (22759309).

648883091 is a wasteful number, since it uses less digits than its factorization.

648883091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12829.

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 648883091 is about 25473.1837625374. The cubic root of 648883091 is about 865.7426617783.

The spelling of 648883091 in words is "six hundred forty-eight million, eight hundred eighty-three thousand, ninety-one".