648314213 has 8 divisors (see below), whose sum is σ = 655474008. Its totient is φ = 641193984.

The previous prime is 648314203. The next prime is 648314221. The reversal of 648314213 is 312413846.

It can be written as a sum of positive squares in 4 ways, for example, as 10903204 + 637411009 = 3302^2 + 25247^2 .

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 648314213 - 2⁸ = 648313957 is a prime.

It is a super-2 number, since 2×648314213² = 840622637555618738, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 648314213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648314203) 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, 23681 + ... + 43097.

It is an arithmetic number, because the mean of its divisors is an integer number (81934251).

Almost surely, 2^648314213 is an apocalyptic number.

It is an amenable number.

648314213 is a deficient number, since it is larger than the sum of its proper divisors (7159795).

648314213 is a wasteful number, since it uses less digits than its factorization.

648314213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19783.

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

The square root of 648314213 is about 25462.0151009302. The cubic root of 648314213 is about 865.4895879673.

The spelling of 648314213 in words is "six hundred forty-eight million, three hundred fourteen thousand, two hundred thirteen".