87506671 has 4 divisors (see below), whose sum is σ = 100007632. Its totient is φ = 75005712.

The previous prime is 87506663. The next prime is 87506729. The reversal of 87506671 is 17660578.

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

It is a cyclic number.

It is not a de Polignac number, because 87506671 - 2³ = 87506663 is a prime.

It is a super-3 number, since 3×87506671³ (a number of 25 digits) contains 333 as substring.

It is the 9355-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87506611) by changing a digit.

It is a nontrivial repunit in base 9354.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6250470 + ... + 6250483.

It is an arithmetic number, because the mean of its divisors is an integer number (25001908).

Almost surely, 2^87506671 is an apocalyptic number.

87506671 is a deficient number, since it is larger than the sum of its proper divisors (12500961).

87506671 is a wasteful number, since it uses less digits than its factorization.

87506671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12500960.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 87506671 is about 9354.5000400877. The cubic root of 87506671 is about 443.9632828848.

The spelling of 87506671 in words is "eighty-seven million, five hundred six thousand, six hundred seventy-one".