86448578 has 4 divisors (see below), whose sum is σ = 129672870. Its totient is φ = 43224288.

The previous prime is 86448577. The next prime is 86448589. The reversal of 86448578 is 87584468.

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

It can be written as a sum of positive squares in only one way, i.e., 61418569 + 25030009 = 7837^2 + 5003^2 .

It is not an unprimeable number, because it can be changed into a prime (86448577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21612143 + ... + 21612146.

Almost surely, 2^86448578 is an apocalyptic number.

86448578 is a deficient number, since it is larger than the sum of its proper divisors (43224292).

86448578 is a wasteful number, since it uses less digits than its factorization.

86448578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43224291.

The product of its digits is 1720320, while the sum is 50.

The square root of 86448578 is about 9297.7727440501. The cubic root of 86448578 is about 442.1666174999.

The spelling of 86448578 in words is "eighty-six million, four hundred forty-eight thousand, five hundred seventy-eight".