87145064 has 48 divisors (see below), whose sum is σ = 171794700. Its totient is φ = 41430528.

The previous prime is 87145033. The next prime is 87145067. The reversal of 87145064 is 46054178.

It can be written as a sum of positive squares in 6 ways, for example, as 83868964 + 3276100 = 9158^2 + 1810^2 .

It is not an unprimeable number, because it can be changed into a prime (87145067) 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 in 11 ways as a sum of consecutive naturals, for example, 799442 + ... + 799550.

Almost surely, 2^87145064 is an apocalyptic number.

It is an amenable number.

87145064 is a deficient number, since it is larger than the sum of its proper divisors (84649636).

87145064 is a wasteful number, since it uses less digits than its factorization.

87145064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 87145064 is about 9335.1520608933. The cubic root of 87145064 is about 443.3509033809.

The spelling of 87145064 in words is "eighty-seven million, one hundred forty-five thousand, sixty-four".