698871240 has 160 divisors (see below), whose sum is σ = 2406733560. Its totient is φ = 181785600.

The previous prime is 698871191. The next prime is 698871259. The reversal of 698871240 is 42178896.

It can be written as a sum of positive squares in 4 ways, for example, as 464230116 + 234641124 = 21546^2 + 15318^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 130210 + ... + 135470.

Almost surely, 2^698871240 is an apocalyptic number.

698871240 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 698871240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1203366780).

698871240 is an abundant number, since it is smaller than the sum of its proper divisors (1707862320).

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

698871240 is a wasteful number, since it uses less digits than its factorization.

698871240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5325 (or 5312 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 698871240 is about 26436.1729454170. The cubic root of 698871240 is about 887.4264923579.

The spelling of 698871240 in words is "six hundred ninety-eight million, eight hundred seventy-one thousand, two hundred forty".