85162778 has 16 divisors (see below), whose sum is σ = 130757760. Its totient is φ = 41581056.

The previous prime is 85162757. The next prime is 85162793. The reversal of 85162778 is 87726158.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59738 + ... + 61146.

It is an arithmetic number, because the mean of its divisors is an integer number (8172360).

Almost surely, 2^85162778 is an apocalyptic number.

85162778 is a deficient number, since it is larger than the sum of its proper divisors (45594982).

85162778 is a wasteful number, since it uses less digits than its factorization.

85162778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101.

The product of its digits is 188160, while the sum is 44.

The square root of 85162778 is about 9228.3681114269. The cubic root of 85162778 is about 439.9634577090.

The spelling of 85162778 in words is "eighty-five million, one hundred sixty-two thousand, seven hundred seventy-eight".