84628637 has 2 divisors, whose sum is σ = 84628638. Its totient is φ = 84628636.

The previous prime is 84628561. The next prime is 84628697. The reversal of 84628637 is 73682648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80389156 + 4239481 = 8966^2 + 2059^2 .

It is a cyclic number.

It is not a de Polignac number, because 84628637 - 2⁸ = 84628381 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84628697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42314318 + 42314319.

It is an arithmetic number, because the mean of its divisors is an integer number (42314319).

Almost surely, 2^84628637 is an apocalyptic number.

It is an amenable number.

84628637 is a deficient number, since it is larger than the sum of its proper divisors (1).

84628637 is an equidigital number, since it uses as much as digits as its factorization.

84628637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 44.

The square root of 84628637 is about 9199.3824249240. The cubic root of 84628637 is about 439.0417109165.

The spelling of 84628637 in words is "eighty-four million, six hundred twenty-eight thousand, six hundred thirty-seven".