670255420 has 24 divisors (see below), whose sum is σ = 1468734624. Its totient is φ = 256445376.

The previous prime is 670255393. The next prime is 670255429. The reversal of 670255420 is 24552076.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670255429) 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 7 ways as a sum of consecutive naturals, for example, 728079 + ... + 728998.

It is an arithmetic number, because the mean of its divisors is an integer number (61197276).

Almost surely, 2^670255420 is an apocalyptic number.

It is an amenable number.

670255420 is an abundant number, since it is smaller than the sum of its proper divisors (798479204).

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

670255420 is a wasteful number, since it uses less digits than its factorization.

670255420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457109 (or 1457107 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 670255420 is about 25889.2916086941. The cubic root of 670255420 is about 875.1451927769.

The spelling of 670255420 in words is "six hundred seventy million, two hundred fifty-five thousand, four hundred twenty".