85147077 has 4 divisors (see below), whose sum is σ = 113529440. Its totient is φ = 56764716.

The previous prime is 85147063. The next prime is 85147099. The reversal of 85147077 is 77074158.

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 not a de Polignac number, because 85147077 - 2²⁰ = 84098501 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 (85147177) 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, 14191177 + ... + 14191182.

It is an arithmetic number, because the mean of its divisors is an integer number (28382360).

Almost surely, 2^85147077 is an apocalyptic number.

It is an amenable number.

85147077 is a deficient number, since it is larger than the sum of its proper divisors (28382363).

85147077 is a wasteful number, since it uses less digits than its factorization.

85147077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28382362.

The product of its (nonzero) digits is 54880, while the sum is 39.

The square root of 85147077 is about 9227.5173800974. The cubic root of 85147077 is about 439.9364181542.

The spelling of 85147077 in words is "eighty-five million, one hundred forty-seven thousand, seventy-seven".