85178378 has 8 divisors (see below), whose sum is σ = 128184672. Its totient is φ = 42450156.

The previous prime is 85178363. The next prime is 85178389. The reversal of 85178378 is 87387158.

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

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 3 ways as a sum of consecutive naturals, for example, 68750 + ... + 69977.

It is an arithmetic number, because the mean of its divisors is an integer number (16023084).

Almost surely, 2^85178378 is an apocalyptic number.

85178378 is a deficient number, since it is larger than the sum of its proper divisors (43006294).

85178378 is a wasteful number, since it uses less digits than its factorization.

85178378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139036.

The product of its digits is 376320, while the sum is 47.

The square root of 85178378 is about 9229.2132925835. The cubic root of 85178378 is about 439.9903200350.

The spelling of 85178378 in words is "eighty-five million, one hundred seventy-eight thousand, three hundred seventy-eight".