84995657 has 2 divisors, whose sum is σ = 84995658. Its totient is φ = 84995656.

The previous prime is 84995633. The next prime is 84995689. The reversal of 84995657 is 75659948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44342281 + 40653376 = 6659^2 + 6376^2 .

It is a cyclic number.

It is not a de Polignac number, because 84995657 - 2⁶ = 84995593 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 84995599 and 84995608.

It is not a weakly prime, because it can be changed into another prime (84995357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42497828 + 42497829.

It is an arithmetic number, because the mean of its divisors is an integer number (42497829).

Almost surely, 2^84995657 is an apocalyptic number.

It is an amenable number.

84995657 is a deficient number, since it is larger than the sum of its proper divisors (1).

84995657 is an equidigital number, since it uses as much as digits as its factorization.

84995657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 53.

The square root of 84995657 is about 9219.3089220397. The cubic root of 84995657 is about 439.6754786839.

The spelling of 84995657 in words is "eighty-four million, nine hundred ninety-five thousand, six hundred fifty-seven".