984698640 has 160 divisors (see below), whose sum is σ = 3474777600. Its totient is φ = 256158720.

The previous prime is 984698639. The next prime is 984698711. The reversal of 984698640 is 46896489.

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

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, 83001 + ... + 94119.

It is an arithmetic number, because the mean of its divisors is an integer number (21717360).

Almost surely, 2^984698640 is an apocalyptic number.

984698640 is a gapful number since it is divisible by the number (90) 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 984698640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1737388800).

984698640 is an abundant number, since it is smaller than the sum of its proper divisors (2490078960).

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

984698640 is a wasteful number, since it uses less digits than its factorization.

984698640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11182 (or 11170 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The square root of 984698640 is about 31379.9082216631. The cubic root of 984698640 is about 994.8733086170.

The spelling of 984698640 in words is "nine hundred eighty-four million, six hundred ninety-eight thousand, six hundred forty".