648897606 has 96 divisors (see below), whose sum is σ = 1654498560. Its totient is φ = 179952192.

The previous prime is 648897593. The next prime is 648897617. The reversal of 648897606 is 606798846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1240461 + ... + 1240983.

It is an arithmetic number, because the mean of its divisors is an integer number (17234360).

Almost surely, 2^648897606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648897606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (827249280).

648897606 is an abundant number, since it is smaller than the sum of its proper divisors (1005600954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648897606 is a wasteful number, since it uses less digits than its factorization.

648897606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The square root of 648897606 is about 25473.4686684009. The cubic root of 648897606 is about 865.7491170557.

The spelling of 648897606 in words is "six hundred forty-eight million, eight hundred ninety-seven thousand, six hundred six".