85510778 has 8 divisors (see below), whose sum is σ = 129053568. Its totient is φ = 42492924.

The previous prime is 85510771. The next prime is 85510793. The reversal of 85510778 is 87701558.

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 (85510771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130826 + ... + 131477.

It is an arithmetic number, because the mean of its divisors is an integer number (16131696).

Almost surely, 2^85510778 is an apocalyptic number.

85510778 is a deficient number, since it is larger than the sum of its proper divisors (43542790).

85510778 is a wasteful number, since it uses less digits than its factorization.

85510778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262468.

The product of its (nonzero) digits is 78400, while the sum is 41.

The square root of 85510778 is about 9247.2037935800. The cubic root of 85510778 is about 440.5619163784.

The spelling of 85510778 in words is "eighty-five million, five hundred ten thousand, seven hundred seventy-eight".