84785311 has 4 divisors (see below), whose sum is σ = 91307272. Its totient is φ = 78263352.

The previous prime is 84785263. The next prime is 84785329. The reversal of 84785311 is 11358748.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84785311 is a prime.

It is a super-2 number, since 2×84785311² = 14377097922733442, 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 (84785381) 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, 3260961 + ... + 3260986.

It is an arithmetic number, because the mean of its divisors is an integer number (22826818).

Almost surely, 2^84785311 is an apocalyptic number.

84785311 is a deficient number, since it is larger than the sum of its proper divisors (6521961).

84785311 is a wasteful number, since it uses less digits than its factorization.

84785311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6521960.

The product of its digits is 26880, while the sum is 37.

The square root of 84785311 is about 9207.8939503016. The cubic root of 84785311 is about 439.3124782701.

The spelling of 84785311 in words is "eighty-four million, seven hundred eighty-five thousand, three hundred eleven".