85644077 has 8 divisors (see below), whose sum is σ = 91166400. Its totient is φ = 80223264.

The previous prime is 85644073. The next prime is 85644107. The reversal of 85644077 is 77044658.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85644077 - 2² = 85644073 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 (85644073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23633 + ... + 27014.

It is an arithmetic number, because the mean of its divisors is an integer number (11395800).

Almost surely, 2^85644077 is an apocalyptic number.

It is an amenable number.

85644077 is a deficient number, since it is larger than the sum of its proper divisors (5522323).

85644077 is a wasteful number, since it uses less digits than its factorization.

85644077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50755.

The product of its (nonzero) digits is 188160, while the sum is 41.

The square root of 85644077 is about 9254.4085170258. The cubic root of 85644077 is about 440.7907217418.

The spelling of 85644077 in words is "eighty-five million, six hundred forty-four thousand, seventy-seven".