670267856 has 20 divisors (see below), whose sum is σ = 1299070500. Its totient is φ = 335023872.

The previous prime is 670267853. The next prime is 670267867. The reversal of 670267856 is 658762076.

It can be written as a sum of positive squares in 2 ways, for example, as 288456256 + 381811600 = 16984^2 + 19540^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 670267856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670267853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68180 + ... + 77388.

It is an arithmetic number, because the mean of its divisors is an integer number (64953525).

Almost surely, 2^670267856 is an apocalyptic number.

It is an amenable number.

670267856 is a deficient number, since it is larger than the sum of its proper divisors (628802644).

670267856 is a wasteful number, since it uses less digits than its factorization.

670267856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13766 (or 13760 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 47.

The square root of 670267856 is about 25889.5317841015. The cubic root of 670267856 is about 875.1506052600.

The spelling of 670267856 in words is "six hundred seventy million, two hundred sixty-seven thousand, eight hundred fifty-six".