84374657 has 2 divisors, whose sum is σ = 84374658. Its totient is φ = 84374656.

The previous prime is 84374627. The next prime is 84374681. The reversal of 84374657 is 75647348.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64625521 + 19749136 = 8039^2 + 4444^2 .

It is a cyclic number.

It is not a de Polignac number, because 84374657 - 2²⁰ = 83326081 is a prime.

It is not a weakly prime, because it can be changed into another prime (84374617) 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, 42187328 + 42187329.

It is an arithmetic number, because the mean of its divisors is an integer number (42187329).

Almost surely, 2^84374657 is an apocalyptic number.

It is an amenable number.

84374657 is a deficient number, since it is larger than the sum of its proper divisors (1).

84374657 is an equidigital number, since it uses as much as digits as its factorization.

84374657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 44.

The square root of 84374657 is about 9185.5678648628. The cubic root of 84374657 is about 438.6020663974.

The spelling of 84374657 in words is "eighty-four million, three hundred seventy-four thousand, six hundred fifty-seven".