86804805 has 64 divisors (see below), whose sum is σ = 154828800. Its totient is φ = 41333760.

The previous prime is 86804791. The next prime is 86804821. The reversal of 86804805 is 50840868.

86804805 = T₉₄ + T₉₅ + ... + T₈₀₄.

It is not a de Polignac number, because 86804805 - 2⁶ = 86804741 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 624426 + ... + 624564.

It is an arithmetic number, because the mean of its divisors is an integer number (2419200).

Almost surely, 2^86804805 is an apocalyptic number.

86804805 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

86804805 is a deficient number, since it is larger than the sum of its proper divisors (68023995).

86804805 is a wasteful number, since it uses less digits than its factorization.

86804805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274.

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 86804805 is about 9316.9096271242. The cubic root of 86804805 is about 442.7731276875.

The spelling of 86804805 in words is "eighty-six million, eight hundred four thousand, eight hundred five".