670236840 has 384 divisors, whose sum is σ = 2751840000. Its totient is φ = 137687040.

The previous prime is 670236823. The next prime is 670236857. The reversal of 670236840 is 48632076.

It is an interprime number because it is at equal distance from previous prime (670236823) and next prime (670236857).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 670236795 and 670236804.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 1342911 + ... + 1343409.

It is an arithmetic number, because the mean of its divisors is an integer number (7166250).

Almost surely, 2^670236840 is an apocalyptic number.

670236840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670236840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1375920000).

670236840 is an abundant number, since it is smaller than the sum of its proper divisors (2081603160).

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

670236840 is a wasteful number, since it uses less digits than its factorization.

670236840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 670236840 is about 25888.9327705875. The cubic root of 670236840 is about 875.1371061344.

The spelling of 670236840 in words is "six hundred seventy million, two hundred thirty-six thousand, eight hundred forty".