86681473 has 4 divisors (see below), whose sum is σ = 86703408. Its totient is φ = 86659540.

The previous prime is 86681467. The next prime is 86681501. The reversal of 86681473 is 37418668.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86681473 - 2⁹ = 86680961 is a prime.

It is a super-2 number, since 2×86681473² = 15027355522899458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86681423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3211 + ... + 13552.

It is an arithmetic number, because the mean of its divisors is an integer number (21675852).

Almost surely, 2^86681473 is an apocalyptic number.

It is an amenable number.

86681473 is a deficient number, since it is larger than the sum of its proper divisors (21935).

86681473 is a wasteful number, since it uses less digits than its factorization.

86681473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21934.

The product of its digits is 193536, while the sum is 43.

The square root of 86681473 is about 9310.2885562156. The cubic root of 86681473 is about 442.5633313974.

The spelling of 86681473 in words is "eighty-six million, six hundred eighty-one thousand, four hundred seventy-three".