84786317 has 12 divisors (see below), whose sum is σ = 107595936. Its totient is φ = 66066840.

The previous prime is 84786313. The next prime is 84786323. The reversal of 84786317 is 71368748.

It is not a de Polignac number, because 84786317 - 2² = 84786313 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84786313) 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, 78113 + ... + 79190.

It is an arithmetic number, because the mean of its divisors is an integer number (8966328).

Almost surely, 2^84786317 is an apocalyptic number.

It is an amenable number.

84786317 is a deficient number, since it is larger than the sum of its proper divisors (22809619).

84786317 is a wasteful number, since it uses less digits than its factorization.

84786317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157328 (or 157321 counting only the distinct ones).

The product of its digits is 225792, while the sum is 44.

The square root of 84786317 is about 9207.9485771805. The cubic root of 84786317 is about 439.3142157826.

Subtracting from 84786317 its reverse (71368748), we obtain a square (13417569 = 3663²).

The spelling of 84786317 in words is "eighty-four million, seven hundred eighty-six thousand, three hundred seventeen".