84470657 has 2 divisors, whose sum is σ = 84470658. Its totient is φ = 84470656.

The previous prime is 84470647. The next prime is 84470669. The reversal of 84470657 is 75607448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43970161 + 40500496 = 6631^2 + 6364^2 .

It is a cyclic number.

It is not a de Polignac number, because 84470657 - 2⁴ = 84470641 is a prime.

It is not a weakly prime, because it can be changed into another prime (84470647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42235328 + 42235329.

It is an arithmetic number, because the mean of its divisors is an integer number (42235329).

Almost surely, 2^84470657 is an apocalyptic number.

It is an amenable number.

84470657 is a deficient number, since it is larger than the sum of its proper divisors (1).

84470657 is an equidigital number, since it uses as much as digits as its factorization.

84470657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 41.

The square root of 84470657 is about 9190.7919680515. The cubic root of 84470657 is about 438.7683479204.

The spelling of 84470657 in words is "eighty-four million, four hundred seventy thousand, six hundred fifty-seven".