1696380840 has 256 divisors, whose sum is σ = 7050240000. Its totient is φ = 352477440.

The previous prime is 1696380821. The next prime is 1696380841. The reversal of 1696380840 is 480836961.

1696380840 is a `hidden beast` number, since 1 + 6 + 9 + 638 + 0 + 8 + 4 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1696380841) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 72961 + ... + 93359.

It is an arithmetic number, because the mean of its divisors is an integer number (27540000).

Almost surely, 2^1696380840 is an apocalyptic number.

1696380840 is a gapful number since it is divisible by the number (10) 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 1696380840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3525120000).

1696380840 is an abundant number, since it is smaller than the sum of its proper divisors (5353859160).

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

1696380840 is a wasteful number, since it uses less digits than its factorization.

1696380840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20437 (or 20427 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 1696380840 is about 41187.1441107538. The cubic root of 1696380840 is about 1192.6356477156.

The spelling of 1696380840 in words is "one billion, six hundred ninety-six million, three hundred eighty thousand, eight hundred forty".