85688461 has 4 divisors (see below), whose sum is σ = 90198400. Its totient is φ = 81178524.

The previous prime is 85688459. The next prime is 85688467. The reversal of 85688461 is 16488658.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16488658 = 2 ⋅8244329.

It is a cyclic number.

It is not a de Polignac number, because 85688461 - 2¹ = 85688459 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 (85688467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2254941 + ... + 2254978.

It is an arithmetic number, because the mean of its divisors is an integer number (22549600).

Almost surely, 2^85688461 is an apocalyptic number.

It is an amenable number.

85688461 is a deficient number, since it is larger than the sum of its proper divisors (4509939).

85688461 is a wasteful number, since it uses less digits than its factorization.

85688461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4509938.

The product of its digits is 368640, while the sum is 46.

The square root of 85688461 is about 9256.8061986843. The cubic root of 85688461 is about 440.8668533999.

The spelling of 85688461 in words is "eighty-five million, six hundred eighty-eight thousand, four hundred sixty-one".