86523890 has 8 divisors (see below), whose sum is σ = 155743020. Its totient is φ = 34609552.

The previous prime is 86523889. The next prime is 86523893. The reversal of 86523890 is 9832568.

It can be written as a sum of positive squares in 2 ways, for example, as 81775849 + 4748041 = 9043^2 + 2179^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (86523893) 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, 4326185 + ... + 4326204.

Almost surely, 2^86523890 is an apocalyptic number.

86523890 is a deficient number, since it is larger than the sum of its proper divisors (69219130).

86523890 is a wasteful number, since it uses less digits than its factorization.

86523890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8652396.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 86523890 is about 9301.8218645597. The cubic root of 86523890 is about 442.2949820050.

The spelling of 86523890 in words is "eighty-six million, five hundred twenty-three thousand, eight hundred ninety".