85706605 has 16 divisors (see below), whose sum is σ = 111558384. Its totient is φ = 62955520.

The previous prime is 85706597. The next prime is 85706627. The reversal of 85706605 is 50660758.

It can be written as a sum of positive squares in 8 ways, for example, as 15515721 + 70190884 = 3939^2 + 8378^2 .

It is not a de Polignac number, because 85706605 - 2³ = 85706597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8812 + ... + 15781.

It is an arithmetic number, because the mean of its divisors is an integer number (6972399).

Almost surely, 2^85706605 is an apocalyptic number.

85706605 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

85706605 is a deficient number, since it is larger than the sum of its proper divisors (25851779).

85706605 is a wasteful number, since it uses less digits than its factorization.

85706605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24656.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 85706605 is about 9257.7861824520. The cubic root of 85706605 is about 440.8979681442.

The spelling of 85706605 in words is "eighty-five million, seven hundred six thousand, six hundred five".