87060789 has 12 divisors (see below), whose sum is σ = 125835372. Its totient is φ = 58003200.

The previous prime is 87060781. The next prime is 87060817. The reversal of 87060789 is 98706078.

It can be written as a sum of positive squares in 2 ways, for example, as 49238289 + 37822500 = 7017^2 + 6150^2 .

It is not a de Polignac number, because 87060789 - 2³ = 87060781 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87060781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25779 + ... + 28959.

It is an arithmetic number, because the mean of its divisors is an integer number (10486281).

Almost surely, 2^87060789 is an apocalyptic number.

It is an amenable number.

87060789 is a deficient number, since it is larger than the sum of its proper divisors (38774583).

87060789 is a wasteful number, since it uses less digits than its factorization.

87060789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6228 (or 6225 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 87060789 is about 9330.6371165103. The cubic root of 87060789 is about 443.2079408063.

The spelling of 87060789 in words is "eighty-seven million, sixty thousand, seven hundred eighty-nine".