1670453 has 4 divisors (see below), whose sum is σ = 1673388. Its totient is φ = 1667520.

The previous prime is 1670447. The next prime is 1670477. The reversal of 1670453 is 3540761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3540761 = 7 ⋅505823.

It can be written as a sum of positive squares in 2 ways, for example, as 508369 + 1162084 = 713^2 + 1078^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1670453 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670413) 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, 308 + ... + 1853.

It is an arithmetic number, because the mean of its divisors is an integer number (418347).

2^1670453 is an apocalyptic number.

It is an amenable number.

1670453 is a deficient number, since it is larger than the sum of its proper divisors (2935).

1670453 is an equidigital number, since it uses as much as digits as its factorization.

1670453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2934.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 1670453 is about 1292.4600574099. The cubic root of 1670453 is about 118.6528261362.

The spelling of 1670453 in words is "one million, six hundred seventy thousand, four hundred fifty-three".