670642808 has 16 divisors (see below), whose sum is σ = 1371769560. Its totient is φ = 304837600.

The previous prime is 670642807. The next prime is 670642853. The reversal of 670642808 is 808246076.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670642801) 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 3 ways as a sum of consecutive naturals, for example, 3810383 + ... + 3810558.

Almost surely, 2^670642808 is an apocalyptic number.

It is an amenable number.

670642808 is an abundant number, since it is smaller than the sum of its proper divisors (701126752).

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

670642808 is a wasteful number, since it uses less digits than its factorization.

670642808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7620958 (or 7620954 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 670642808 is about 25896.7721540736. The cubic root of 670642808 is about 875.3137630672.

The spelling of 670642808 in words is "six hundred seventy million, six hundred forty-two thousand, eight hundred eight".