674874881 has 4 divisors (see below), whose sum is σ = 681832452. Its totient is φ = 667917312.

The previous prime is 674874877. The next prime is 674874887. The reversal of 674874881 is 188478476.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 269255281 + 405619600 = 16409^2 + 20140^2 .

It is a cyclic number.

It is not a de Polignac number, because 674874881 - 2² = 674874877 is a prime.

It is a super-4 number, since 4×674874881⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (674874887) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3478640 + ... + 3478833.

It is an arithmetic number, because the mean of its divisors is an integer number (170458113).

Almost surely, 2^674874881 is an apocalyptic number.

It is an amenable number.

674874881 is a deficient number, since it is larger than the sum of its proper divisors (6957571).

674874881 is an equidigital number, since it uses as much as digits as its factorization.

674874881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6957570.

The product of its digits is 2408448, while the sum is 53.

The square root of 674874881 is about 25978.3540856614. The cubic root of 674874881 is about 877.1511180887.

The spelling of 674874881 in words is "six hundred seventy-four million, eight hundred seventy-four thousand, eight hundred eighty-one".