99687073 has 2 divisors, whose sum is σ = 99687074. Its totient is φ = 99687072.

The previous prime is 99687043. The next prime is 99687157. The reversal of 99687073 is 37078699.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56430144 + 43256929 = 7512^2 + 6577^2 .

It is a cyclic number.

It is not a de Polignac number, because 99687073 - 2¹³ = 99678881 is a prime.

It is not a weakly prime, because it can be changed into another prime (99687043) 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, 49843536 + 49843537.

It is an arithmetic number, because the mean of its divisors is an integer number (49843537).

Almost surely, 2^99687073 is an apocalyptic number.

It is an amenable number.

99687073 is a deficient number, since it is larger than the sum of its proper divisors (1).

99687073 is an equidigital number, since it uses as much as digits as its factorization.

99687073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 99687073 is about 9984.3413903973. The cubic root of 99687073 is about 463.6742179699.

The spelling of 99687073 in words is "ninety-nine million, six hundred eighty-seven thousand, seventy-three".