670382440 has 192 divisors, whose sum is σ = 1931074560. Its totient is φ = 204871680.

The previous prime is 670382399. The next prime is 670382441. The reversal of 670382440 is 44283076.

It is a junction number, because it is equal to n+sod(n) for n = 670382396 and 670382405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670382441) 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 47 ways as a sum of consecutive naturals, for example, 1466692 + ... + 1467148.

It is an arithmetic number, because the mean of its divisors is an integer number (10057680).

Almost surely, 2^670382440 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 670382440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (965537280).

670382440 is an abundant number, since it is smaller than the sum of its proper divisors (1260692120).

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

670382440 is a wasteful number, since it uses less digits than its factorization.

670382440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 670382440 is about 25891.7446302871. The cubic root of 670382440 is about 875.2004721613.

The spelling of 670382440 in words is "six hundred seventy million, three hundred eighty-two thousand, four hundred forty".