87686073 has 24 divisors (see below), whose sum is σ = 133802240. Its totient is φ = 55248480.

The previous prime is 87686069. The next prime is 87686077. The reversal of 87686073 is 37068678.

It is an interprime number because it is at equal distance from previous prime (87686069) and next prime (87686077).

It is not a de Polignac number, because 87686073 - 2² = 87686069 is a prime.

It is a super-2 number, since 2×87686073² = 15377694796322658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87686077) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8343 + ... + 15651.

Almost surely, 2^87686073 is an apocalyptic number.

It is an amenable number.

87686073 is a deficient number, since it is larger than the sum of its proper divisors (46116167).

87686073 is a wasteful number, since it uses less digits than its factorization.

87686073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7389 (or 7386 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 87686073 is about 9364.0842050891. The cubic root of 87686073 is about 444.2664732274.

It can be divided in two parts, 8768 and 6073, that added together give a palindrome (14841).

The spelling of 87686073 in words is "eighty-seven million, six hundred eighty-six thousand, seventy-three".