86724446 has 16 divisors (see below), whose sum is σ = 137964384. Its totient is φ = 40744704.

The previous prime is 86724439. The next prime is 86724457. The reversal of 86724446 is 64442768.

It is a super-2 number, since 2×86724446² = 15042259068013832, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23546 + ... + 26978.

It is an arithmetic number, because the mean of its divisors is an integer number (8622774).

Almost surely, 2^86724446 is an apocalyptic number.

86724446 is a deficient number, since it is larger than the sum of its proper divisors (51239938).

86724446 is a wasteful number, since it uses less digits than its factorization.

86724446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4195.

The product of its digits is 258048, while the sum is 41.

The square root of 86724446 is about 9312.5960934639. The cubic root of 86724446 is about 442.6364540284.

The spelling of 86724446 in words is "eighty-six million, seven hundred twenty-four thousand, four hundred forty-six".