8487685501 has 2 divisors, whose sum is σ = 8487685502. Its totient is φ = 8487685500.

The previous prime is 8487685499. The next prime is 8487685513. The reversal of 8487685501 is 1055867848.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4455562500 + 4032123001 = 66750^2 + 63499^2 .

It is a cyclic number.

It is not a de Polignac number, because 8487685501 - 2¹ = 8487685499 is a prime.

Together with 8487685499, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8487685571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4243842750 + 4243842751.

It is an arithmetic number, because the mean of its divisors is an integer number (4243842751).

Almost surely, 2^8487685501 is an apocalyptic number.

It is an amenable number.

8487685501 is a deficient number, since it is larger than the sum of its proper divisors (1).

8487685501 is an equidigital number, since it uses as much as digits as its factorization.

8487685501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2150400, while the sum is 52.

The square root of 8487685501 is about 92128.6356188997. The cubic root of 8487685501 is about 2039.8415150651.

The spelling of 8487685501 in words is "eight billion, four hundred eighty-seven million, six hundred eighty-five thousand, five hundred one".