698793661440 has 2112 divisors, whose sum is σ = 3124446474240. Its totient is φ = 146193776640.

The previous prime is 698793661361. The next prime is 698793661453. The reversal of 698793661440 is 44166397896.

698793661440 is a `hidden beast` number, since 6 + 9 + 8 + 7 + 9 + 3 + 6 + 614 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 6784404429 + ... + 6784404531.

Almost surely, 2^698793661440 is an apocalyptic number.

698793661440 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 698793661440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1562223237120).

698793661440 is an abundant number, since it is smaller than the sum of its proper divisors (2425652812800).

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

698793661440 is a wasteful number, since it uses less digits than its factorization.

698793661440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 698793661440 in words is "six hundred ninety-eight billion, seven hundred ninety-three million, six hundred sixty-one thousand, four hundred forty".