998701679 has 2 divisors, whose sum is σ = 998701680. Its totient is φ = 998701678.

The previous prime is 998701633. The next prime is 998701723. The reversal of 998701679 is 976107899.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998701679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998701619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499350839 + 499350840.

It is an arithmetic number, because the mean of its divisors is an integer number (499350840).

Almost surely, 2^998701679 is an apocalyptic number.

998701679 is a deficient number, since it is larger than the sum of its proper divisors (1).

998701679 is an equidigital number, since it uses as much as digits as its factorization.

998701679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1714608, while the sum is 56.

The square root of 998701679 is about 31602.2416768178. The cubic root of 998701679 is about 999.5670389051.

The spelling of 998701679 in words is "nine hundred ninety-eight million, seven hundred one thousand, six hundred seventy-nine".