698989896 has 72 divisors (see below), whose sum is σ = 2080868790. Its totient is φ = 211812480.

The previous prime is 698989861. The next prime is 698989909.

698989896 is nontrivially palindromic in base 10.

698989896 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 379080900 + 319908996 = 19470^2 + 17886^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 31405 + ... + 48828.

Almost surely, 2^698989896 is an apocalyptic number.

698989896 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

698989896 is an abundant number, since it is smaller than the sum of its proper divisors (1381878894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

698989896 is a wasteful number, since it uses less digits than its factorization.

698989896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80267 (or 80249 counting only the distinct ones).

The product of its digits is 120932352, while the sum is 72.

The square root of 698989896 is about 26438.4170479248. The cubic root of 698989896 is about 887.4767126337.

The spelling of 698989896 in words is "six hundred ninety-eight million, nine hundred eighty-nine thousand, eight hundred ninety-six".