654379213 has 2 divisors, whose sum is σ = 654379214. Its totient is φ = 654379212.

The previous prime is 654379189. The next prime is 654379223. The reversal of 654379213 is 312973456.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 645058404 + 9320809 = 25398^2 + 3053^2 .

It is a cyclic number.

It is not a de Polignac number, because 654379213 - 2⁹ = 654378701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654379223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327189606 + 327189607.

It is an arithmetic number, because the mean of its divisors is an integer number (327189607).

Almost surely, 2^654379213 is an apocalyptic number.

It is an amenable number.

654379213 is a deficient number, since it is larger than the sum of its proper divisors (1).

654379213 is an equidigital number, since it uses as much as digits as its factorization.

654379213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 40.

The square root of 654379213 is about 25580.8368315034. The cubic root of 654379213 is about 868.1801095275.

The spelling of 654379213 in words is "six hundred fifty-four million, three hundred seventy-nine thousand, two hundred thirteen".