648242423 has 4 divisors (see below), whose sum is σ = 670595640. Its totient is φ = 625889208.

The previous prime is 648242407. The next prime is 648242449. The reversal of 648242423 is 324242846.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 648242423 - 2⁴ = 648242407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648242123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11176565 + ... + 11176622.

It is an arithmetic number, because the mean of its divisors is an integer number (167648910).

Almost surely, 2^648242423 is an apocalyptic number.

648242423 is a deficient number, since it is larger than the sum of its proper divisors (22353217).

648242423 is a wasteful number, since it uses less digits than its factorization.

648242423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22353216.

The product of its digits is 73728, while the sum is 35.

The square root of 648242423 is about 25460.6053148781. The cubic root of 648242423 is about 865.4576406030.

The spelling of 648242423 in words is "six hundred forty-eight million, two hundred forty-two thousand, four hundred twenty-three".