670438000 has 80 divisors (see below), whose sum is σ = 1637663040. Its totient is φ = 265440000.

The previous prime is 670437997. The next prime is 670438049. The reversal of 670438000 is 834076.

670438000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×670438000² = 898974223688000000, 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 670438000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200341 + ... + 203659.

It is an arithmetic number, because the mean of its divisors is an integer number (20470788).

Almost surely, 2^670438000 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 670438000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (818831520).

670438000 is an abundant number, since it is smaller than the sum of its proper divisors (967225040).

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

670438000 is a wasteful number, since it uses less digits than its factorization.

670438000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3443 (or 3427 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 670438000 is about 25892.8175369155. The cubic root of 670438000 is about 875.2246498009.

The spelling of 670438000 in words is "six hundred seventy million, four hundred thirty-eight thousand".