85649679 has 12 divisors (see below), whose sum is σ = 126593896. Its totient is φ = 55771632.

The previous prime is 85649671. The next prime is 85649699. The reversal of 85649679 is 97694658.

85649679 is a `hidden beast` number, since 8 + 564 + 9 + 6 + 79 = 666.

It is not a de Polignac number, because 85649679 - 2³ = 85649671 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 (85649671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110272 + ... + 111045.

Almost surely, 2^85649679 is an apocalyptic number.

85649679 is a deficient number, since it is larger than the sum of its proper divisors (40944217).

85649679 is a wasteful number, since it uses less digits than its factorization.

85649679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221366 (or 221363 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 85649679 is about 9254.7111786376. The cubic root of 85649679 is about 440.8003322752.

The spelling of 85649679 in words is "eighty-five million, six hundred forty-nine thousand, six hundred seventy-nine".