85166290 has 16 divisors (see below), whose sum is σ = 167235840. Its totient is φ = 30969520.

The previous prime is 85166287. The next prime is 85166293. The reversal of 85166290 is 9266158.

It is an interprime number because it is at equal distance from previous prime (85166287) and next prime (85166293).

It is not an unprimeable number, because it can be changed into a prime (85166293) 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 7 ways as a sum of consecutive naturals, for example, 387010 + ... + 387229.

It is an arithmetic number, because the mean of its divisors is an integer number (10452240).

Almost surely, 2^85166290 is an apocalyptic number.

85166290 is a deficient number, since it is larger than the sum of its proper divisors (82069550).

85166290 is a wasteful number, since it uses less digits than its factorization.

85166290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774257.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 85166290 is about 9228.5583922951. The cubic root of 85166290 is about 439.9695054624.

It can be divided in two parts, 85 and 166290, that added together give a cube (166375 = 55³).

The spelling of 85166290 in words is "eighty-five million, one hundred sixty-six thousand, two hundred ninety".