85705907 has 4 divisors (see below), whose sum is σ = 97949616. Its totient is φ = 73462200.

The previous prime is 85705901. The next prime is 85705909. The reversal of 85705907 is 70950758.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 85705907 - 2¹⁴ = 85689523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85705901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6121844 + ... + 6121857.

It is an arithmetic number, because the mean of its divisors is an integer number (24487404).

Almost surely, 2^85705907 is an apocalyptic number.

85705907 is a deficient number, since it is larger than the sum of its proper divisors (12243709).

85705907 is a wasteful number, since it uses less digits than its factorization.

85705907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12243708.

The product of its (nonzero) digits is 88200, while the sum is 41.

The square root of 85705907 is about 9257.7484843778. The cubic root of 85705907 is about 440.8967712407.

The spelling of 85705907 in words is "eighty-five million, seven hundred five thousand, nine hundred seven".