670490808 has 64 divisors (see below), whose sum is σ = 1813311360. Its totient is φ = 205374336.

The previous prime is 670490803. The next prime is 670490827. The reversal of 670490808 is 808094076.

It is a happy number.

It is a super-2 number, since 2×670490808² = 899115847224985728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 670490808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670490803) 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, 66091 + ... + 75557.

It is an arithmetic number, because the mean of its divisors is an integer number (28332990).

Almost surely, 2^670490808 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 670490808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (906655680).

670490808 is an abundant number, since it is smaller than the sum of its proper divisors (1142820552).

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

670490808 is a wasteful number, since it uses less digits than its factorization.

670490808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9716 (or 9712 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 670490808 is about 25893.8372590854. The cubic root of 670490808 is about 875.2476286345.

The spelling of 670490808 in words is "six hundred seventy million, four hundred ninety thousand, eight hundred eight".