87071493 has 8 divisors (see below), whose sum is σ = 116248608. Its totient is φ = 57971024.

The previous prime is 87071477. The next prime is 87071497. The reversal of 87071493 is 39417078.

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

It is a cyclic number.

It is not a de Polignac number, because 87071493 - 2⁴ = 87071477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87071497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16455 + ... + 21092.

It is an arithmetic number, because the mean of its divisors is an integer number (14531076).

Almost surely, 2^87071493 is an apocalyptic number.

It is an amenable number.

87071493 is a deficient number, since it is larger than the sum of its proper divisors (29177115).

87071493 is a wasteful number, since it uses less digits than its factorization.

87071493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38323.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 87071493 is about 9331.2106931523. The cubic root of 87071493 is about 443.2261039903.

The spelling of 87071493 in words is "eighty-seven million, seventy-one thousand, four hundred ninety-three".