85763609 has 4 divisors (see below), whose sum is σ = 86009700. Its totient is φ = 85517520.

The previous prime is 85763581. The next prime is 85763611. The reversal of 85763609 is 90636758.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21715600 + 64048009 = 4660^2 + 8003^2 .

It is a cyclic number.

It is not a de Polignac number, because 85763609 - 2¹⁶ = 85698073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85763609.

It is not an unprimeable number, because it can be changed into a prime (85763659) 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, 122522 + ... + 123219.

It is an arithmetic number, because the mean of its divisors is an integer number (21502425).

Almost surely, 2^85763609 is an apocalyptic number.

It is an amenable number.

85763609 is a deficient number, since it is larger than the sum of its proper divisors (246091).

85763609 is a wasteful number, since it uses less digits than its factorization.

85763609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246090.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 85763609 is about 9260.8643765040. The cubic root of 85763609 is about 440.9956944817.

The spelling of 85763609 in words is "eighty-five million, seven hundred sixty-three thousand, six hundred nine".