84784697 has 2 divisors, whose sum is σ = 84784698. Its totient is φ = 84784696.

The previous prime is 84784621. The next prime is 84784703. The reversal of 84784697 is 79648748.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83521321 + 1263376 = 9139^2 + 1124^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84784697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84724697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42392348 + 42392349.

It is an arithmetic number, because the mean of its divisors is an integer number (42392349).

Almost surely, 2^84784697 is an apocalyptic number.

It is an amenable number.

84784697 is a deficient number, since it is larger than the sum of its proper divisors (1).

84784697 is an equidigital number, since it uses as much as digits as its factorization.

84784697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 53.

The square root of 84784697 is about 9207.8606092838. The cubic root of 84784697 is about 439.3114177935.

The spelling of 84784697 in words is "eighty-four million, seven hundred eighty-four thousand, six hundred ninety-seven".