670854057984 has 624 divisors, whose sum is σ = 2225695739904. Its totient is φ = 200193638400.

The previous prime is 670854057967. The next prime is 670854057989. The reversal of 670854057984 is 489750458076.

670854057984 is a `hidden beast` number, since 6 + 7 + 0 + 8 + 54 + 0 + 579 + 8 + 4 = 666.

It is a super-3 number, since 3×670854057984³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670854057989) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 777350737 + ... + 777351599.

It is an arithmetic number, because the mean of its divisors is an integer number (3566820096).

Almost surely, 2^670854057984 is an apocalyptic number.

670854057984 is a gapful number since it is divisible by the number (64) 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 670854057984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1112847869952).

670854057984 is an abundant number, since it is smaller than the sum of its proper divisors (1554841681920).

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

670854057984 is an equidigital number, since it uses as much as digits as its factorization.

670854057984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984 (or 950 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 63.

The spelling of 670854057984 in words is "six hundred seventy billion, eight hundred fifty-four million, fifty-seven thousand, nine hundred eighty-four".