1670949 has 30 divisors (see below), whose sum is σ = 2910534. Its totient is φ = 952560.

The previous prime is 1670923. The next prime is 1670953. The reversal of 1670949 is 9490761.

It can be written as a sum of positive squares in only one way, i.e., 893025 + 777924 = 945^2 + 882^2 .

It is not a de Polignac number, because 1670949 - 2¹² = 1666853 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670959) 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 29 ways as a sum of consecutive naturals, for example, 3759 + ... + 4179.

2^1670949 is an apocalyptic number.

It is an amenable number.

1670949 is a deficient number, since it is larger than the sum of its proper divisors (1239585).

1670949 is an equidigital number, since it uses as much as digits as its factorization.

1670949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 1670949 is about 1292.6519253070. The cubic root of 1670949 is about 118.6645686551.

The spelling of 1670949 in words is "one million, six hundred seventy thousand, nine hundred forty-nine".