698121963 has 120 divisors (see below), whose sum is σ = 1341118800. Its totient is φ = 358585920.

The previous prime is 698121961. The next prime is 698121971. The reversal of 698121963 is 369121896.

It is a happy number.

It is not a de Polignac number, because 698121963 - 2¹ = 698121961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (698121961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 7844023 + ... + 7844111.

It is an arithmetic number, because the mean of its divisors is an integer number (11175990).

Almost surely, 2^698121963 is an apocalyptic number.

698121963 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

698121963 is a deficient number, since it is larger than the sum of its proper divisors (642996837).

698121963 is an equidigital number, since it uses as much as digits as its factorization.

698121963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 110 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 698121963 is about 26421.9977102414. The cubic root of 698121963 is about 887.1092350473.

The spelling of 698121963 in words is "six hundred ninety-eight million, one hundred twenty-one thousand, nine hundred sixty-three".