287678701 has 2 divisors, whose sum is σ = 287678702. Its totient is φ = 287678700.

The previous prime is 287678683. The next prime is 287678711. The reversal of 287678701 is 107876782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 285576201 + 2102500 = 16899^2 + 1450^2 .

It is a cyclic number.

It is not a de Polignac number, because 287678701 - 2⁹ = 287678189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287678711) 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, 143839350 + 143839351.

It is an arithmetic number, because the mean of its divisors is an integer number (143839351).

Almost surely, 2^287678701 is an apocalyptic number.

It is an amenable number.

287678701 is a deficient number, since it is larger than the sum of its proper divisors (1).

287678701 is an equidigital number, since it uses as much as digits as its factorization.

287678701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 263424, while the sum is 46.

The square root of 287678701 is about 16961.0937442135. The cubic root of 287678701 is about 660.1397783227.

The spelling of 287678701 in words is "two hundred eighty-seven million, six hundred seventy-eight thousand, seven hundred one".