98001691 has 2 divisors, whose sum is σ = 98001692. Its totient is φ = 98001690.

The previous prime is 98001671. The next prime is 98001707. The reversal of 98001691 is 19610089.

It is a strong prime.

It is an emirp because it is prime and its reverse (19610089) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98001691 - 2¹³ = 97993499 is a prime.

It is not a weakly prime, because it can be changed into another prime (98001671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49000845 + 49000846.

It is an arithmetic number, because the mean of its divisors is an integer number (49000846).

Almost surely, 2^98001691 is an apocalyptic number.

98001691 is a deficient number, since it is larger than the sum of its proper divisors (1).

98001691 is an equidigital number, since it uses as much as digits as its factorization.

98001691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 98001691 is about 9899.5803446409. The cubic root of 98001691 is about 461.0462809755.

The spelling of 98001691 in words is "ninety-eight million, one thousand, six hundred ninety-one".