87548689 has 2 divisors, whose sum is σ = 87548690. Its totient is φ = 87548688.

The previous prime is 87548683. The next prime is 87548707. The reversal of 87548689 is 98684578.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81595089 + 5953600 = 9033^2 + 2440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87548689 is a prime.

It is not a weakly prime, because it can be changed into another prime (87548683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43774344 + 43774345.

It is an arithmetic number, because the mean of its divisors is an integer number (43774345).

Almost surely, 2^87548689 is an apocalyptic number.

It is an amenable number.

87548689 is a deficient number, since it is larger than the sum of its proper divisors (1).

87548689 is an equidigital number, since it uses as much as digits as its factorization.

87548689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3870720, while the sum is 55.

The square root of 87548689 is about 9356.7456415145. The cubic root of 87548689 is about 444.0343306652.

The spelling of 87548689 in words is "eighty-seven million, five hundred forty-eight thousand, six hundred eighty-nine".