670440660 has 24 divisors (see below), whose sum is σ = 1877234016. Its totient is φ = 178784160.

The previous prime is 670440653. The next prime is 670440697. The reversal of 670440660 is 66044076.

It is a congruent number.

It is an unprimeable number.

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, 5586946 + ... + 5587065.

It is an arithmetic number, because the mean of its divisors is an integer number (78218084).

Almost surely, 2^670440660 is an apocalyptic number.

670440660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

670440660 is an abundant number, since it is smaller than the sum of its proper divisors (1206793356).

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

670440660 is a wasteful number, since it uses less digits than its factorization.

670440660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11174023 (or 11174021 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 670440660 is about 25892.8689024604. The cubic root of 670440660 is about 875.2258073001.

It can be divided in two parts, 670 and 440660, that added together give a triangular number (441330 = T₉₃₉).

The spelling of 670440660 in words is "six hundred seventy million, four hundred forty thousand, six hundred sixty".