82840237 has 2 divisors, whose sum is σ = 82840238. Its totient is φ = 82840236.

The previous prime is 82840223. The next prime is 82840279. The reversal of 82840237 is 73204828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77545636 + 5294601 = 8806^2 + 2301^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82840237 is a prime.

It is equal to p_4825528 and since 82840237 and 4825528 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82840937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41420118 + 41420119.

It is an arithmetic number, because the mean of its divisors is an integer number (41420119).

Almost surely, 2^82840237 is an apocalyptic number.

It is an amenable number.

82840237 is a deficient number, since it is larger than the sum of its proper divisors (1).

82840237 is an equidigital number, since it uses as much as digits as its factorization.

82840237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 82840237 is about 9101.6612219968. The cubic root of 82840237 is about 435.9270088653.

The spelling of 82840237 in words is "eighty-two million, eight hundred forty thousand, two hundred thirty-seven".