85278811 has 12 divisors (see below), whose sum is σ = 88479496. Its totient is φ = 82183680.

The previous prime is 85278797. The next prime is 85278833. The reversal of 85278811 is 11887258.

It is not a de Polignac number, because 85278811 - 2¹⁷ = 85147739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85278311) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 162796 + ... + 163318.

Almost surely, 2^85278811 is an apocalyptic number.

85278811 is a deficient number, since it is larger than the sum of its proper divisors (3200685).

85278811 is an equidigital number, since it uses as much as digits as its factorization.

85278811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702 (or 661 counting only the distinct ones).

The product of its digits is 35840, while the sum is 40.

The square root of 85278811 is about 9234.6527276341. The cubic root of 85278811 is about 440.1631815537.

The spelling of 85278811 in words is "eighty-five million, two hundred seventy-eight thousand, eight hundred eleven".