84605237 has 2 divisors, whose sum is σ = 84605238. Its totient is φ = 84605236.

The previous prime is 84605207. The next prime is 84605239. The reversal of 84605237 is 73250648.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81018001 + 3587236 = 9001^2 + 1894^2 .

It is a cyclic number.

It is not a de Polignac number, because 84605237 - 2⁸ = 84604981 is a prime.

It is a super-2 number, since 2×84605237² = 14316092255652338, which contains 22 as substring.

Together with 84605239, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 84605197 and 84605206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84605239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42302618 + 42302619.

It is an arithmetic number, because the mean of its divisors is an integer number (42302619).

Almost surely, 2^84605237 is an apocalyptic number.

It is an amenable number.

84605237 is a deficient number, since it is larger than the sum of its proper divisors (1).

84605237 is an equidigital number, since it uses as much as digits as its factorization.

84605237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 84605237 is about 9198.1105124911. The cubic root of 84605237 is about 439.0012418608.

The spelling of 84605237 in words is "eighty-four million, six hundred five thousand, two hundred thirty-seven".