99620237 has 2 divisors, whose sum is σ = 99620238. Its totient is φ = 99620236.

The previous prime is 99620189. The next prime is 99620263. The reversal of 99620237 is 73202699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67141636 + 32478601 = 8194^2 + 5699^2 .

It is a cyclic number.

It is not a de Polignac number, because 99620237 - 2⁸ = 99619981 is a prime.

It is a Chen prime.

It is equal to p_5740886 and since 99620237 and 5740886 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99620237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99620537) 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, 49810118 + 49810119.

It is an arithmetic number, because the mean of its divisors is an integer number (49810119).

Almost surely, 2^99620237 is an apocalyptic number.

It is an amenable number.

99620237 is a deficient number, since it is larger than the sum of its proper divisors (1).

99620237 is an equidigital number, since it uses as much as digits as its factorization.

99620237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 99620237 is about 9980.9937881956. The cubic root of 99620237 is about 463.5705700995.

The spelling of 99620237 in words is "ninety-nine million, six hundred twenty thousand, two hundred thirty-seven".