87032913 has 8 divisors (see below), whose sum is σ = 126593376. Its totient is φ = 52747200.

The previous prime is 87032899. The next prime is 87032941. The reversal of 87032913 is 31923078.

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

It is not a de Polignac number, because 87032913 - 2⁸ = 87032657 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2637361 = 87032913 / (8 + 7 + 0 + 3 + 2 + 9 + 1 + 3).

It is not an unprimeable number, because it can be changed into a prime (87032213) 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, 1318648 + ... + 1318713.

It is an arithmetic number, because the mean of its divisors is an integer number (15824172).

Almost surely, 2^87032913 is an apocalyptic number.

It is an amenable number.

87032913 is a deficient number, since it is larger than the sum of its proper divisors (39560463).

87032913 is a wasteful number, since it uses less digits than its factorization.

87032913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637375.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 87032913 is about 9329.1432082480. The cubic root of 87032913 is about 443.1606321630.

The spelling of 87032913 in words is "eighty-seven million, thirty-two thousand, nine hundred thirteen".