648423113 has 8 divisors (see below), whose sum is σ = 717175368. Its totient is φ = 582367104.

The previous prime is 648423071. The next prime is 648423137. The reversal of 648423113 is 311324846.

It can be written as a sum of positive squares in 4 ways, for example, as 156825529 + 491597584 = 12523^2 + 22172^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 648423113 - 2¹² = 648419017 is a prime.

It is a super-2 number, since 2×648423113² = 840905066945221538, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 648423113.

It is not an unprimeable number, because it can be changed into a prime (648423173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 673556 + ... + 674517.

It is an arithmetic number, because the mean of its divisors is an integer number (89646921).

Almost surely, 2^648423113 is an apocalyptic number.

It is an amenable number.

648423113 is a deficient number, since it is larger than the sum of its proper divisors (68752255).

648423113 is a wasteful number, since it uses less digits than its factorization.

648423113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348123.

The product of its digits is 13824, while the sum is 32.

The square root of 648423113 is about 25464.1534907407. The cubic root of 648423113 is about 865.5380452007.

Adding to 648423113 its reverse (311324846), we get a palindrome (959747959).

The spelling of 648423113 in words is "six hundred forty-eight million, four hundred twenty-three thousand, one hundred thirteen".