674821170 has 72 divisors (see below), whose sum is σ = 1803565764. Its totient is φ = 175056768.

The previous prime is 674821151. The next prime is 674821177. The reversal of 674821170 is 71128476.

674821170 is a `hidden beast` number, since 6 + 7 + 482 + 1 + 170 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 674492841 + 328329 = 25971^2 + 573^2 .

It is a super-2 number, since 2×674821170² = 910767222960337800, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (674821177) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 120472 + ... + 125948.

Almost surely, 2^674821170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 674821170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (901782882).

674821170 is an abundant number, since it is smaller than the sum of its proper divisors (1128744594).

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

674821170 is a wasteful number, since it uses less digits than its factorization.

674821170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5564 (or 5524 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 674821170 is about 25977.3203006007. The cubic root of 674821170 is about 877.1278476450.

The spelling of 674821170 in words is "six hundred seventy-four million, eight hundred twenty-one thousand, one hundred seventy".