1670620896 has 144 divisors (see below), whose sum is σ = 5668321680. Its totient is φ = 477308160.

The previous prime is 1670620867. The next prime is 1670620909. The reversal of 1670620896 is 6980260761.

1670620896 is a `hidden beast` number, since 16 + 7 + 0 + 620 + 8 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22606 + ... + 62066.

It is an arithmetic number, because the mean of its divisors is an integer number (39363345).

Almost surely, 2^1670620896 is an apocalyptic number.

1670620896 is a gapful number since it is divisible by the number (16) 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 1670620896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2834160840).

1670620896 is an abundant number, since it is smaller than the sum of its proper divisors (3997700784).

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

1670620896 is a wasteful number, since it uses less digits than its factorization.

1670620896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39494 (or 39473 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1670620896 is about 40873.2295763376. The cubic root of 1670620896 is about 1186.5680123908.

The spelling of 1670620896 in words is "one billion, six hundred seventy million, six hundred twenty thousand, eight hundred ninety-six".