87032021 has 8 divisors (see below), whose sum is σ = 89102400. Its totient is φ = 84981600.

The previous prime is 87032017. The next prime is 87032047. The reversal of 87032021 is 12023078.

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 87032021 - 2² = 87032017 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 (87032081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4025 + ... + 13793.

It is an arithmetic number, because the mean of its divisors is an integer number (11137800).

Almost surely, 2^87032021 is an apocalyptic number.

It is an amenable number.

87032021 is a deficient number, since it is larger than the sum of its proper divisors (2070379).

87032021 is a wasteful number, since it uses less digits than its factorization.

87032021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9979.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 87032021 is about 9329.0954009486. The cubic root of 87032021 is about 443.1591181740.

Adding to 87032021 its reverse (12023078), we get a palindrome (99055099).

The spelling of 87032021 in words is "eighty-seven million, thirty-two thousand, twenty-one".