698958131 has 2 divisors, whose sum is σ = 698958132. Its totient is φ = 698958130.

The previous prime is 698958101. The next prime is 698958173. The reversal of 698958131 is 131859896.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 698958131 - 2¹⁰ = 698957107 is a prime.

It is a super-2 number, since 2×698958131² = 977084937782026322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 698958131.

It is not a weakly prime, because it can be changed into another prime (698958101) 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, 349479065 + 349479066.

It is an arithmetic number, because the mean of its divisors is an integer number (349479066).

Almost surely, 2^698958131 is an apocalyptic number.

698958131 is a deficient number, since it is larger than the sum of its proper divisors (1).

698958131 is an equidigital number, since it uses as much as digits as its factorization.

698958131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 50.

The square root of 698958131 is about 26437.8163054364. The cubic root of 698958131 is about 887.4632688891.

The spelling of 698958131 in words is "six hundred ninety-eight million, nine hundred fifty-eight thousand, one hundred thirty-one".