87520829 has 8 divisors (see below), whose sum is σ = 95580000. Its totient is φ = 79478800.

The previous prime is 87520817. The next prime is 87520831. The reversal of 87520829 is 92802578.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87520829 - 2⁴ = 87520813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87520729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7922 + ... + 15420.

It is an arithmetic number, because the mean of its divisors is an integer number (11947500).

Almost surely, 2^87520829 is an apocalyptic number.

It is an amenable number.

87520829 is a deficient number, since it is larger than the sum of its proper divisors (8059171).

87520829 is a wasteful number, since it uses less digits than its factorization.

87520829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8571.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 87520829 is about 9355.2567575668. The cubic root of 87520829 is about 443.9872250335.

The spelling of 87520829 in words is "eighty-seven million, five hundred twenty thousand, eight hundred twenty-nine".