878746513 has 2 divisors, whose sum is σ = 878746514. Its totient is φ = 878746512.

The previous prime is 878746489. The next prime is 878746591. The reversal of 878746513 is 315647878.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 541399824 + 337346689 = 23268^2 + 18367^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-878746513 is a prime.

It is not a weakly prime, because it can be changed into another prime (878746013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439373256 + 439373257.

It is an arithmetic number, because the mean of its divisors is an integer number (439373257).

Almost surely, 2^878746513 is an apocalyptic number.

It is an amenable number.

878746513 is a deficient number, since it is larger than the sum of its proper divisors (1).

878746513 is an equidigital number, since it uses as much as digits as its factorization.

878746513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960, while the sum is 49.

The square root of 878746513 is about 29643.6589003449. The cubic root of 878746513 is about 957.8287565311.

The spelling of 878746513 in words is "eight hundred seventy-eight million, seven hundred forty-six thousand, five hundred thirteen".