85664741 has 4 divisors (see below), whose sum is σ = 85797792. Its totient is φ = 85531692.

The previous prime is 85664713. The next prime is 85664767. The reversal of 85664741 is 14746658.

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.

It is a cyclic number.

It is not a de Polignac number, because 85664741 - 2¹⁴ = 85648357 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 (85664771) 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, 65555 + ... + 66848.

It is an arithmetic number, because the mean of its divisors is an integer number (21449448).

Almost surely, 2^85664741 is an apocalyptic number.

It is an amenable number.

85664741 is a deficient number, since it is larger than the sum of its proper divisors (133051).

85664741 is a wasteful number, since it uses less digits than its factorization.

85664741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133050.

The product of its digits is 161280, while the sum is 41.

The square root of 85664741 is about 9255.5248905721. The cubic root of 85664741 is about 440.8261698714.

The spelling of 85664741 in words is "eighty-five million, six hundred sixty-four thousand, seven hundred forty-one".