648134801 has 2 divisors, whose sum is σ = 648134802. Its totient is φ = 648134800.

The previous prime is 648134797. The next prime is 648134863. The reversal of 648134801 is 108431846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 572357776 + 75777025 = 23924^2 + 8705^2 .

It is a cyclic number.

It is not a de Polignac number, because 648134801 - 2² = 648134797 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (648134101) 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, 324067400 + 324067401.

It is an arithmetic number, because the mean of its divisors is an integer number (324067401).

Almost surely, 2^648134801 is an apocalyptic number.

It is an amenable number.

648134801 is a deficient number, since it is larger than the sum of its proper divisors (1).

648134801 is an equidigital number, since it uses as much as digits as its factorization.

648134801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 648134801 is about 25458.4917267304. The cubic root of 648134801 is about 865.4097431735.

The spelling of 648134801 in words is "six hundred forty-eight million, one hundred thirty-four thousand, eight hundred one".