99742613 has 2 divisors, whose sum is σ = 99742614. Its totient is φ = 99742612.

The previous prime is 99742541. The next prime is 99742619. The reversal of 99742613 is 31624799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87478609 + 12264004 = 9353^2 + 3502^2 .

It is an emirp because it is prime and its reverse (31624799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99742613 - 2¹⁶ = 99677077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99742619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49871306 + 49871307.

It is an arithmetic number, because the mean of its divisors is an integer number (49871307).

Almost surely, 2^99742613 is an apocalyptic number.

It is an amenable number.

99742613 is a deficient number, since it is larger than the sum of its proper divisors (1).

99742613 is an equidigital number, since it uses as much as digits as its factorization.

99742613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 41.

The square root of 99742613 is about 9987.1223583172. The cubic root of 99742613 is about 463.7603130010.

The spelling of 99742613 in words is "ninety-nine million, seven hundred forty-two thousand, six hundred thirteen".