86578747 has 4 divisors (see below), whose sum is σ = 88420896. Its totient is φ = 84736600.

The previous prime is 86578741. The next prime is 86578769. The reversal of 86578747 is 74787568.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86578747 - 2⁷ = 86578619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86578694 and 86578703.

It is not an unprimeable number, because it can be changed into a prime (86578741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921004 + ... + 921097.

It is an arithmetic number, because the mean of its divisors is an integer number (22105224).

Almost surely, 2^86578747 is an apocalyptic number.

86578747 is a deficient number, since it is larger than the sum of its proper divisors (1842149).

86578747 is a wasteful number, since it uses less digits than its factorization.

86578747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842148.

The product of its digits is 2634240, while the sum is 52.

The square root of 86578747 is about 9304.7701207499. The cubic root of 86578747 is about 442.3884353852.

The spelling of 86578747 in words is "eighty-six million, five hundred seventy-eight thousand, seven hundred forty-seven".