87645324 has 24 divisors (see below), whose sum is σ = 220237360. Its totient is φ = 26967744.

The previous prime is 87645323. The next prime is 87645343. The reversal of 87645324 is 42354678.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (87645323) 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 7 ways as a sum of consecutive naturals, for example, 280759 + ... + 281070.

Almost surely, 2^87645324 is an apocalyptic number.

It is an amenable number.

87645324 is an abundant number, since it is smaller than the sum of its proper divisors (132592036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87645324 is a wasteful number, since it uses less digits than its factorization.

87645324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561849 (or 561847 counting only the distinct ones).

The product of its digits is 161280, while the sum is 39.

The square root of 87645324 is about 9361.9081388358. The cubic root of 87645324 is about 444.1976435226.

The spelling of 87645324 in words is "eighty-seven million, six hundred forty-five thousand, three hundred twenty-four".