87660541 has 4 divisors (see below), whose sum is σ = 88436412. Its totient is φ = 86884672.

The previous prime is 87660527. The next prime is 87660563. The reversal of 87660541 is 14506678.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38800441 + 48860100 = 6229^2 + 6990^2 .

It is a cyclic number.

It is not a de Polignac number, because 87660541 - 2¹⁷ = 87529469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87660541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87660571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387766 + ... + 387991.

It is an arithmetic number, because the mean of its divisors is an integer number (22109103).

Almost surely, 2^87660541 is an apocalyptic number.

It is an amenable number.

87660541 is a deficient number, since it is larger than the sum of its proper divisors (775871).

87660541 is a wasteful number, since it uses less digits than its factorization.

87660541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775870.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 87660541 is about 9362.7208118153. The cubic root of 87660541 is about 444.2233492651.

The spelling of 87660541 in words is "eighty-seven million, six hundred sixty thousand, five hundred forty-one".