84057637 has 2 divisors, whose sum is σ = 84057638. Its totient is φ = 84057636.

The previous prime is 84057607. The next prime is 84057683. The reversal of 84057637 is 73675048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83649316 + 408321 = 9146^2 + 639^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84057637 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84057637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84057607) 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, 42028818 + 42028819.

It is an arithmetic number, because the mean of its divisors is an integer number (42028819).

Almost surely, 2^84057637 is an apocalyptic number.

It is an amenable number.

84057637 is a deficient number, since it is larger than the sum of its proper divisors (1).

84057637 is an equidigital number, since it uses as much as digits as its factorization.

84057637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 84057637 is about 9168.2952068528. The cubic root of 84057637 is about 438.0520586844.

The spelling of 84057637 in words is "eighty-four million, fifty-seven thousand, six hundred thirty-seven".