85787269 has 4 divisors (see below), whose sum is σ = 87067744. Its totient is φ = 84506796.

The previous prime is 85787257. The next prime is 85787281. The reversal of 85787269 is 96278758.

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 an interprime number because it is at equal distance from previous prime (85787257) and next prime (85787281).

It is a cyclic number.

It is not a de Polignac number, because 85787269 - 2¹⁹ = 85262981 is a prime.

It is a super-2 number, since 2×85787269² = 14718911044956722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85787209) 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, 640137 + ... + 640270.

It is an arithmetic number, because the mean of its divisors is an integer number (21766936).

Almost surely, 2^85787269 is an apocalyptic number.

85787269 is the 5348-th hex number.

It is an amenable number.

85787269 is a deficient number, since it is larger than the sum of its proper divisors (1280475).

85787269 is a wasteful number, since it uses less digits than its factorization.

85787269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280474.

The product of its digits is 1693440, while the sum is 52.

The square root of 85787269 is about 9262.1417069704. The cubic root of 85787269 is about 441.0362439211.

The spelling of 85787269 in words is "eighty-five million, seven hundred eighty-seven thousand, two hundred sixty-nine".