85665097 has 4 divisors (see below), whose sum is σ = 97902976. Its totient is φ = 73427220.

The previous prime is 85665077. The next prime is 85665103. The reversal of 85665097 is 79056658.

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 a de Polignac number, because none of the positive numbers 2^k-85665097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85665037) 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, 6118929 + ... + 6118942.

It is an arithmetic number, because the mean of its divisors is an integer number (24475744).

Almost surely, 2^85665097 is an apocalyptic number.

It is an amenable number.

85665097 is a deficient number, since it is larger than the sum of its proper divisors (12237879).

85665097 is a wasteful number, since it uses less digits than its factorization.

85665097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12237878.

The product of its (nonzero) digits is 453600, while the sum is 46.

The square root of 85665097 is about 9255.5441223085. The cubic root of 85665097 is about 440.8267805229.

The spelling of 85665097 in words is "eighty-five million, six hundred sixty-five thousand, ninety-seven".