87711417 has 20 divisors (see below), whose sum is σ = 131301940. Its totient is φ = 58351104.

The previous prime is 87711311. The next prime is 87711427. The reversal of 87711417 is 71411778.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 63297936 + 24413481 = 7956^2 + 4941^2 .

It is not a de Polignac number, because 87711417 - 2⁸ = 87711161 is a prime.

It is a super-3 number, since 3×87711417³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87711427) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 53709 + ... + 55317.

It is an arithmetic number, because the mean of its divisors is an integer number (6565097).

Almost surely, 2^87711417 is an apocalyptic number.

It is an amenable number.

87711417 is a deficient number, since it is larger than the sum of its proper divisors (43590523).

87711417 is a wasteful number, since it uses less digits than its factorization.

87711417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294 (or 2285 counting only the distinct ones).

The product of its digits is 10976, while the sum is 36.

The square root of 87711417 is about 9365.4373629852. The cubic root of 87711417 is about 444.3092713765.

The spelling of 87711417 in words is "eighty-seven million, seven hundred eleven thousand, four hundred seventeen".