87471693 has 12 divisors (see below), whose sum is σ = 126461920. Its totient is φ = 58261896.

The previous prime is 87471667. The next prime is 87471701. The reversal of 87471693 is 39617478.

It is not a de Polignac number, because 87471693 - 2⁵ = 87471661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87471793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7998 + ... + 15456.

Almost surely, 2^87471693 is an apocalyptic number.

It is an amenable number.

87471693 is a deficient number, since it is larger than the sum of its proper divisors (38990227).

87471693 is a wasteful number, since it uses less digits than its factorization.

87471693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8768 (or 8765 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 87471693 is about 9352.6302717471. The cubic root of 87471693 is about 443.9041216153.

It can be divided in two parts, 8747 and 1693, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 87471693 in words is "eighty-seven million, four hundred seventy-one thousand, six hundred ninety-three".