698617920 has 448 divisors, whose sum is σ = 2982260736. Its totient is φ = 133816320.

The previous prime is 698617883. The next prime is 698617921. The reversal of 698617920 is 29716896.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 698617920.

It is not an unprimeable number, because it can be changed into a prime (698617921) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 960597 + ... + 961323.

It is an arithmetic number, because the mean of its divisors is an integer number (6656832).

Almost surely, 2^698617920 is an apocalyptic number.

698617920 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 698617920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1491130368).

698617920 is an abundant number, since it is smaller than the sum of its proper divisors (2283642816).

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

698617920 is a wasteful number, since it uses less digits than its factorization.

698617920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778 (or 768 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 698617920 is about 26431.3813486923. The cubic root of 698617920 is about 887.3192575136.

The spelling of 698617920 in words is "six hundred ninety-eight million, six hundred seventeen thousand, nine hundred twenty".