85531693 has 8 divisors (see below), whose sum is σ = 92186136. Its totient is φ = 78888000.

The previous prime is 85531657. The next prime is 85531723. The reversal of 85531693 is 39613558.

It can be written as a sum of positive squares in 4 ways, for example, as 3755844 + 81775849 = 1938^2 + 9043^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85531693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85531793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22983 + ... + 26443.

It is an arithmetic number, because the mean of its divisors is an integer number (11523267).

Almost surely, 2^85531693 is an apocalyptic number.

It is an amenable number.

85531693 is a deficient number, since it is larger than the sum of its proper divisors (6654443).

85531693 is a wasteful number, since it uses less digits than its factorization.

85531693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5375.

The product of its digits is 97200, while the sum is 40.

The square root of 85531693 is about 9248.3346068360. The cubic root of 85531693 is about 440.5978323239.

The spelling of 85531693 in words is "eighty-five million, five hundred thirty-one thousand, six hundred ninety-three".