86823506 has 32 divisors (see below), whose sum is σ = 167978880. Its totient is φ = 32659200.

The previous prime is 86823479. The next prime is 86823509. The reversal of 86823506 is 60532868.

It is a self number, because there is not a number n which added to its sum of digits gives 86823506.

It is not an unprimeable number, because it can be changed into a prime (86823509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5255 + ... + 14186.

It is an arithmetic number, because the mean of its divisors is an integer number (5249340).

Almost surely, 2^86823506 is an apocalyptic number.

86823506 is a deficient number, since it is larger than the sum of its proper divisors (81155374).

86823506 is a wasteful number, since it uses less digits than its factorization.

86823506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19490.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 86823506 is about 9317.9131783892. The cubic root of 86823506 is about 442.8049220323.

The spelling of 86823506 in words is "eighty-six million, eight hundred twenty-three thousand, five hundred six".