86574681 has 6 divisors (see below), whose sum is σ = 125052330. Its totient is φ = 57716448.

The previous prime is 86574647. The next prime is 86574689. The reversal of 86574681 is 18647568.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 86490000 + 84681 = 9300^2 + 291^2 .

It is not a de Polignac number, because 86574681 - 2⁶ = 86574617 is a prime.

It is a super-2 number, since 2×86574681² = 14990350780503522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86574689) 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 5 ways as a sum of consecutive naturals, for example, 4809696 + ... + 4809713.

It is an arithmetic number, because the mean of its divisors is an integer number (20842055).

Almost surely, 2^86574681 is an apocalyptic number.

It is an amenable number.

86574681 is a deficient number, since it is larger than the sum of its proper divisors (38477649).

86574681 is a wasteful number, since it uses less digits than its factorization.

86574681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9619415 (or 9619412 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 86574681 is about 9304.5516281012. The cubic root of 86574681 is about 442.3815099769.

The spelling of 86574681 in words is "eighty-six million, five hundred seventy-four thousand, six hundred eighty-one".