87281711 has 8 divisors (see below), whose sum is σ = 99356544. Its totient is φ = 75896920.

The previous prime is 87281707. The next prime is 87281729. The reversal of 87281711 is 11718278.

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

It is not a de Polignac number, because 87281711 - 2² = 87281707 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 (87281731) 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, 172241 + ... + 172746.

It is an arithmetic number, because the mean of its divisors is an integer number (12419568).

Almost surely, 2^87281711 is an apocalyptic number.

87281711 is a deficient number, since it is larger than the sum of its proper divisors (12074833).

87281711 is a wasteful number, since it uses less digits than its factorization.

87281711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345021.

The product of its digits is 6272, while the sum is 35.

The square root of 87281711 is about 9342.4681428411. The cubic root of 87281711 is about 443.5825131067.

Adding to 87281711 its reverse (11718278), we get a palindrome (98999989).

The spelling of 87281711 in words is "eighty-seven million, two hundred eighty-one thousand, seven hundred eleven".