1706897920 has 320 divisors, whose sum is σ = 5345657856. Its totient is φ = 507248640.

The previous prime is 1706897897. The next prime is 1706897939. The reversal of 1706897920 is 297986071.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (320).

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 31 ways as a sum of consecutive naturals, for example, 3960105 + ... + 3960535.

Almost surely, 2^1706897920 is an apocalyptic number.

1706897920 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 1706897920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2672828928).

1706897920 is an abundant number, since it is smaller than the sum of its proper divisors (3638759936).

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

1706897920 is a wasteful number, since it uses less digits than its factorization.

1706897920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 49.

The square root of 1706897920 is about 41314.6211407051. The cubic root of 1706897920 is about 1195.0952393413.

The spelling of 1706897920 in words is "one billion, seven hundred six million, eight hundred ninety-seven thousand, nine hundred twenty".