85307697 has 6 divisors (see below), whose sum is σ = 123222242. Its totient is φ = 56871792.

The previous prime is 85307693. The next prime is 85307699. The reversal of 85307697 is 79670358.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 53056656 + 32251041 = 7284^2 + 5679^2 .

It is not a de Polignac number, because 85307697 - 2² = 85307693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85307693) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4739308 + ... + 4739325.

Almost surely, 2^85307697 is an apocalyptic number.

It is an amenable number.

85307697 is a deficient number, since it is larger than the sum of its proper divisors (37914545).

85307697 is a wasteful number, since it uses less digits than its factorization.

85307697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9478639 (or 9478636 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 85307697 is about 9236.2165955547. The cubic root of 85307697 is about 440.2128739224.

The spelling of 85307697 in words is "eighty-five million, three hundred seven thousand, six hundred ninety-seven".