1670406 has 16 divisors (see below), whose sum is σ = 3360000. Its totient is φ = 553608.

The previous prime is 1670399. The next prime is 1670407. The reversal of 1670406 is 6040761.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 495 + ... + 1893.

It is an arithmetic number, because the mean of its divisors is an integer number (210000).

2^1670406 is an apocalyptic number.

1670406 is an abundant number, since it is smaller than the sum of its proper divisors (1689594).

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

1670406 is a wasteful number, since it uses less digits than its factorization.

1670406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1670406 is about 1292.4418749019. The cubic root of 1670406 is about 118.6517133173.

The spelling of 1670406 in words is "one million, six hundred seventy thousand, four hundred six".