674805841920 has 840 divisors, whose sum is σ = 2777097685824. Its totient is φ = 153561858048.

The previous prime is 674805841877. The next prime is 674805841933. The reversal of 674805841920 is 29148508476.

It is a happy number.

674805841920 is a `hidden beast` number, since 6 + 7 + 48 + 0 + 584 + 19 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (840).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2972712847 + ... + 2972713073.

Almost surely, 2^674805841920 is an apocalyptic number.

674805841920 is a gapful number since it is divisible by the number (60) 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 674805841920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1388548842912).

674805841920 is an abundant number, since it is smaller than the sum of its proper divisors (2102291843904).

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

674805841920 is an frugal number, since it uses more digits than its factorization.

674805841920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 674805841920 in words is "six hundred seventy-four billion, eight hundred five million, eight hundred forty-one thousand, nine hundred twenty".