8687639041 has 2 divisors, whose sum is σ = 8687639042. Its totient is φ = 8687639040.

The previous prime is 8687639003. The next prime is 8687639083. The reversal of 8687639041 is 1409367868.

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., 8635799041 + 51840000 = 92929^2 + 7200^2 .

It is a cyclic number.

It is not a de Polignac number, because 8687639041 - 2¹³ = 8687630849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8687639041.

It is not a weakly prime, because it can be changed into another prime (8687639341) 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, 4343819520 + 4343819521.

It is an arithmetic number, because the mean of its divisors is an integer number (4343819521).

Almost surely, 2^8687639041 is an apocalyptic number.

It is an amenable number.

8687639041 is a deficient number, since it is larger than the sum of its proper divisors (1).

8687639041 is an equidigital number, since it uses as much as digits as its factorization.

8687639041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 8687639041 is about 93207.5052825683. The cubic root of 8687639041 is about 2055.7355966955.

The spelling of 8687639041 in words is "eight billion, six hundred eighty-seven million, six hundred thirty-nine thousand, forty-one".