87652449 has 10 divisors (see below), whose sum is σ = 130937730. Its totient is φ = 58434912.

The previous prime is 87652421. The next prime is 87652489. The reversal of 87652449 is 94425678.

It is a happy number.

87652449 is a `hidden beast` number, since 87 + 6 + 524 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 87609600 + 42849 = 9360^2 + 207^2 .

It is not a de Polignac number, because 87652449 - 2¹³ = 87644257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87652489) 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 9 ways as a sum of consecutive naturals, for example, 540984 + ... + 541145.

It is an arithmetic number, because the mean of its divisors is an integer number (13093773).

Almost surely, 2^87652449 is an apocalyptic number.

It is an amenable number.

87652449 is a deficient number, since it is larger than the sum of its proper divisors (43285281).

87652449 is a wasteful number, since it uses less digits than its factorization.

87652449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082141 (or 1082132 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 87652449 is about 9362.2886625013. The cubic root of 87652449 is about 444.2096799984.

The spelling of 87652449 in words is "eighty-seven million, six hundred fifty-two thousand, four hundred forty-nine".