87436071 has 32 divisors (see below), whose sum is σ = 133816320. Its totient is φ = 56391552.

The previous prime is 87436057. The next prime is 87436109. The reversal of 87436071 is 17063478.

87436071 is a `hidden beast` number, since 8 + 7 + 43 + 607 + 1 = 666.

It is not a de Polignac number, because 87436071 - 2⁵ = 87436039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87436001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147151 + ... + 147743.

It is an arithmetic number, because the mean of its divisors is an integer number (4181760).

Almost surely, 2^87436071 is an apocalyptic number.

87436071 is a deficient number, since it is larger than the sum of its proper divisors (46380249).

87436071 is a wasteful number, since it uses less digits than its factorization.

87436071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 87436071 is about 9350.7256937630. The cubic root of 87436071 is about 443.8438548818.

The spelling of 87436071 in words is "eighty-seven million, four hundred thirty-six thousand, seventy-one".