86723015 has 4 divisors (see below), whose sum is σ = 104067624. Its totient is φ = 69378408.

The previous prime is 86722969. The next prime is 86723017. The reversal of 86723015 is 51032768.

It is a happy number.

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 86723015 - 2¹⁶ = 86657479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86723017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8672297 + ... + 8672306.

It is an arithmetic number, because the mean of its divisors is an integer number (26016906).

Almost surely, 2^86723015 is an apocalyptic number.

86723015 is a deficient number, since it is larger than the sum of its proper divisors (17344609).

86723015 is a wasteful number, since it uses less digits than its factorization.

86723015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17344608.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 86723015 is about 9312.5192617250. The cubic root of 86723015 is about 442.6340194352.

The spelling of 86723015 in words is "eighty-six million, seven hundred twenty-three thousand, fifteen".