674228017883808 has 144 divisors (see below), whose sum is σ = 2032667606347560. Its totient is φ = 211257115803648.

The previous prime is 674228017883773. The next prime is 674228017883809. The reversal of 674228017883808 is 808388710822476.

674228017883808 is a `hidden beast` number, since 6 + 7 + 4 + 228 + 0 + 17 + 8 + 8 + 380 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 441040824944784 + 233187192939024 = 21000972^2 + 15270468^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (674228017883809) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82490593 + ... + 90294816.

Almost surely, 2^{674228017883808} is an apocalyptic number.

674228017883808 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

674228017883808 is an abundant number, since it is smaller than the sum of its proper divisors (1358439588463752).

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

674228017883808 is a wasteful number, since it uses less digits than its factorization.

674228017883808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172786239 (or 172786228 counting only the distinct ones).

The product of its (nonzero) digits is 462422016, while the sum is 72.

The spelling of 674228017883808 in words is "six hundred seventy-four trillion, two hundred twenty-eight billion, seventeen million, eight hundred eighty-three thousand, eight hundred eight".