87643652 has 12 divisors (see below), whose sum is σ = 153461196. Its totient is φ = 43797600.

The previous prime is 87643643. The next prime is 87643657. The reversal of 87643652 is 25634678.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 85858756 + 1784896 = 9266^2 + 1336^2 .

It is not an unprimeable number, because it can be changed into a prime (87643657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3902 + ... + 13802.

It is an arithmetic number, because the mean of its divisors is an integer number (12788433).

Almost surely, 2^87643652 is an apocalyptic number.

It is an amenable number.

87643652 is a deficient number, since it is larger than the sum of its proper divisors (65817544).

87643652 is a wasteful number, since it uses less digits than its factorization.

87643652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12118 (or 12116 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The square root of 87643652 is about 9361.8188403750. The cubic root of 87643652 is about 444.1948188685.

The spelling of 87643652 in words is "eighty-seven million, six hundred forty-three thousand, six hundred fifty-two".