1670478 has 8 divisors (see below), whose sum is σ = 3340968. Its totient is φ = 556824.

The previous prime is 1670477. The next prime is 1670489. The reversal of 1670478 is 8740761.

It is a sphenic number, since it is the product of 3 distinct primes.

1670478 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139201 + ... + 139212.

It is an arithmetic number, because the mean of its divisors is an integer number (417621).

2^1670478 is an apocalyptic number.

1670478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1670478 is a wasteful number, since it uses less digits than its factorization.

1670478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278418.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 1670478 is about 1292.4697288525. The cubic root of 1670478 is about 118.6534180527.

The spelling of 1670478 in words is "one million, six hundred seventy thousand, four hundred seventy-eight".