1697998464 has 224 divisors, whose sum is σ = 5244301440. Its totient is φ = 546808320.

The previous prime is 1697998447. The next prime is 1697998499. The reversal of 1697998464 is 4648997961.

1697998464 is a `hidden beast` number, since 16 + 9 + 79 + 98 + 464 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2892379 + ... + 2892965.

It is an arithmetic number, because the mean of its divisors is an integer number (23412060).

Almost surely, 2^1697998464 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 1697998464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2622150720).

1697998464 is an abundant number, since it is smaller than the sum of its proper divisors (3546302976).

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

1697998464 is an frugal number, since it uses more digits than its factorization.

1697998464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 623 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 63.

The square root of 1697998464 is about 41206.7769183662. The cubic root of 1697998464 is about 1193.0146159094.

The spelling of 1697998464 in words is "one billion, six hundred ninety-seven million, nine hundred ninety-eight thousand, four hundred sixty-four".