674221240 has 128 divisors (see below), whose sum is σ = 1899417600. Its totient is φ = 209249280.

The previous prime is 674221193. The next prime is 674221267. The reversal of 674221240 is 42122476.

It is a happy number.

674221240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 674221199 and 674221208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1407321 + ... + 1407799.

It is an arithmetic number, because the mean of its divisors is an integer number (14839200).

Almost surely, 2^674221240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 674221240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (949708800).

674221240 is an abundant number, since it is smaller than the sum of its proper divisors (1225196360).

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

674221240 is a wasteful number, since it uses less digits than its factorization.

674221240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965 (or 961 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 674221240 is about 25965.7705450849. The cubic root of 674221240 is about 876.8678423039.

The spelling of 674221240 in words is "six hundred seventy-four million, two hundred twenty-one thousand, two hundred forty".