648605292 has 96 divisors (see below), whose sum is σ = 1599451392. Its totient is φ = 204374016.

The previous prime is 648605273. The next prime is 648605297. The reversal of 648605292 is 292506846.

It is not an unprimeable number, because it can be changed into a prime (648605297) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2523628 + ... + 2523884.

It is an arithmetic number, because the mean of its divisors is an integer number (16660952).

Almost surely, 2^648605292 is an apocalyptic number.

It is an amenable number.

648605292 is an abundant number, since it is smaller than the sum of its proper divisors (950846100).

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

648605292 is a wasteful number, since it uses less digits than its factorization.

648605292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 648605292 is about 25467.7304053581. The cubic root of 648605292 is about 865.6190972624.

The spelling of 648605292 in words is "six hundred forty-eight million, six hundred five thousand, two hundred ninety-two".