698446840 has 128 divisors (see below), whose sum is σ = 2036160000. Its totient is φ = 209392128.

The previous prime is 698446829. The next prime is 698446871. The reversal of 698446840 is 48644896.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64111 + ... + 74209.

It is an arithmetic number, because the mean of its divisors is an integer number (15907500).

Almost surely, 2^698446840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 698446840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1018080000).

698446840 is an abundant number, since it is smaller than the sum of its proper divisors (1337713160).

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

698446840 is a wasteful number, since it uses less digits than its factorization.

698446840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10149 (or 10145 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 49.

The square root of 698446840 is about 26428.1448459781. The cubic root of 698446840 is about 887.2468216526.

It can be divided in two parts, 6984 and 46840, that added together give a square (53824 = 232²).

The spelling of 698446840 in words is "six hundred ninety-eight million, four hundred forty-six thousand, eight hundred forty".