648792242 has 54 divisors (see below), whose sum is σ = 1184036319. Its totient is φ = 265842360.

The previous prime is 648792229. The next prime is 648792281. The reversal of 648792242 is 242297846.

648792242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 324396121 + 324396121 = 18011^2 + 18011^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=18011.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 648792193 and 648792202.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 7816733 + ... + 7816815.

Almost surely, 2^648792242 is an apocalyptic number.

648792242 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

648792242 is a deficient number, since it is larger than the sum of its proper divisors (535244077).

648792242 is an equidigital number, since it uses as much as digits as its factorization.

648792242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 123 counting only the distinct ones).

The product of its digits is 387072, while the sum is 44.

The square root of 648792242 is about 25471.4004719018. The cubic root of 648792242 is about 865.7022561813.

The spelling of 648792242 in words is "six hundred forty-eight million, seven hundred ninety-two thousand, two hundred forty-two".