698664960 has 576 divisors, whose sum is σ = 2995574400. Its totient is φ = 151289856.

The previous prime is 698664959. The next prime is 698664971. The reversal of 698664960 is 69466896.

It is a happy number.

698664960 is a `hidden beast` number, since 6 + 98 + 66 + 496 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 698664897 and 698664906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36771831 + ... + 36771849.

It is an arithmetic number, because the mean of its divisors is an integer number (5200650).

Almost surely, 2^698664960 is an apocalyptic number.

698664960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 698664960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1497787200).

698664960 is an abundant number, since it is smaller than the sum of its proper divisors (2296909440).

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

698664960 is a wasteful number, since it uses less digits than its factorization.

698664960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The square root of 698664960 is about 26432.2711850495. The cubic root of 698664960 is about 887.3391723387.

The spelling of 698664960 in words is "six hundred ninety-eight million, six hundred sixty-four thousand, nine hundred sixty".