670121144 has 64 divisors (see below), whose sum is σ = 1569542400. Its totient is φ = 260582400.

The previous prime is 670121143. The next prime is 670121149. The reversal of 670121144 is 441121076.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670121143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571679 + ... + 572849.

It is an arithmetic number, because the mean of its divisors is an integer number (24524100).

Almost surely, 2^670121144 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 670121144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (784771200).

670121144 is an abundant number, since it is smaller than the sum of its proper divisors (899421256).

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

670121144 is a wasteful number, since it uses less digits than its factorization.

670121144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124 (or 2120 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 670121144 is about 25886.6982058354. The cubic root of 670121144 is about 875.0867479709.

The spelling of 670121144 in words is "six hundred seventy million, one hundred twenty-one thousand, one hundred forty-four".