87063689 has 2 divisors, whose sum is σ = 87063690. Its totient is φ = 87063688.

The previous prime is 87063677. The next prime is 87063703. The reversal of 87063689 is 98636078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74046025 + 13017664 = 8605^2 + 3608^2 .

It is a cyclic number.

It is not a de Polignac number, because 87063689 - 2⁴ = 87063673 is a prime.

It is not a weakly prime, because it can be changed into another prime (87063289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43531844 + 43531845.

It is an arithmetic number, because the mean of its divisors is an integer number (43531845).

Almost surely, 2^87063689 is an apocalyptic number.

It is an amenable number.

87063689 is a deficient number, since it is larger than the sum of its proper divisors (1).

87063689 is an equidigital number, since it uses as much as digits as its factorization.

87063689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 87063689 is about 9330.7925172517. The cubic root of 87063689 is about 443.2128618458.

The spelling of 87063689 in words is "eighty-seven million, sixty-three thousand, six hundred eighty-nine".