85605723 has 12 divisors (see below), whose sum is σ = 141317488. Its totient is φ = 48917520.

The previous prime is 85605649. The next prime is 85605731. The reversal of 85605723 is 32750658.

85605723 is a `hidden beast` number, since 85 + 6 + 0 + 572 + 3 = 666.

It is not a de Polignac number, because 85605723 - 2¹⁷ = 85474651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85605323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 679348 + ... + 679473.

Almost surely, 2^85605723 is an apocalyptic number.

85605723 is a deficient number, since it is larger than the sum of its proper divisors (55711765).

85605723 is a wasteful number, since it uses less digits than its factorization.

85605723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358834 (or 1358831 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 85605723 is about 9252.3360833900. The cubic root of 85605723 is about 440.7249121251.

The spelling of 85605723 in words is "eighty-five million, six hundred five thousand, seven hundred twenty-three".