648618367 has 2 divisors, whose sum is σ = 648618368. Its totient is φ = 648618366.

The previous prime is 648618349. The next prime is 648618389. The reversal of 648618367 is 763816846.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 648618367 - 2¹⁵ = 648585599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 648618367.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648618167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324309183 + 324309184.

It is an arithmetic number, because the mean of its divisors is an integer number (324309184).

Almost surely, 2^648618367 is an apocalyptic number.

648618367 is a deficient number, since it is larger than the sum of its proper divisors (1).

648618367 is an equidigital number, since it uses as much as digits as its factorization.

648618367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 49.

The square root of 648618367 is about 25467.9871014574. The cubic root of 648618367 is about 865.6249137910.

The spelling of 648618367 in words is "six hundred forty-eight million, six hundred eighteen thousand, three hundred sixty-seven".