85704087 has 12 divisors (see below), whose sum is σ = 132929016. Its totient is φ = 48973680.

The previous prime is 85704083. The next prime is 85704107. The reversal of 85704087 is 78040758.

It is not a de Polignac number, because 85704087 - 2² = 85704083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85704083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 291364 + ... + 291657.

It is an arithmetic number, because the mean of its divisors is an integer number (11077418).

Almost surely, 2^85704087 is an apocalyptic number.

85704087 is a deficient number, since it is larger than the sum of its proper divisors (47224929).

85704087 is a wasteful number, since it uses less digits than its factorization.

85704087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583038 (or 583031 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 85704087 is about 9257.6501878176. The cubic root of 85704087 is about 440.8936503442.

The spelling of 85704087 in words is "eighty-five million, seven hundred four thousand, eighty-seven".