648106992 has 120 divisors (see below), whose sum is σ = 1960166208. Its totient is φ = 198720000.

The previous prime is 648106973. The next prime is 648106999. The reversal of 648106992 is 299601846.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648106999) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 862617 + ... + 863367.

Almost surely, 2^648106992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648106992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (980083104).

648106992 is an abundant number, since it is smaller than the sum of its proper divisors (1312059216).

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

648106992 is a wasteful number, since it uses less digits than its factorization.

648106992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239 (or 1230 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 648106992 is about 25457.9455573304. The cubic root of 648106992 is about 865.3973658493.

The spelling of 648106992 in words is "six hundred forty-eight million, one hundred six thousand, nine hundred ninety-two".