86478734 has 4 divisors (see below), whose sum is σ = 129718104. Its totient is φ = 43239366.

The previous prime is 86478727. The next prime is 86478737. The reversal of 86478734 is 43787468.

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

It is a super-3 number, since 3×86478734³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86478737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21619682 + ... + 21619685.

It is an arithmetic number, because the mean of its divisors is an integer number (32429526).

Almost surely, 2^86478734 is an apocalyptic number.

86478734 is a deficient number, since it is larger than the sum of its proper divisors (43239370).

86478734 is a wasteful number, since it uses less digits than its factorization.

86478734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43239369.

The product of its digits is 903168, while the sum is 47.

The square root of 86478734 is about 9299.3942813497. The cubic root of 86478734 is about 442.2180254262.

The spelling of 86478734 in words is "eighty-six million, four hundred seventy-eight thousand, seven hundred thirty-four".