1670379 has 4 divisors (see below), whose sum is σ = 2227176. Its totient is φ = 1113584.

The previous prime is 1670359. The next prime is 1670399. The reversal of 1670379 is 9730761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9730761 = 3 ⋅3243587.

It is an interprime number because it is at equal distance from previous prime (1670359) and next prime (1670399).

It is a cyclic number.

It is not a de Polignac number, because 1670379 - 2¹⁵ = 1637611 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1670359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278394 + ... + 278399.

It is an arithmetic number, because the mean of its divisors is an integer number (556794).

2^1670379 is an apocalyptic number.

1670379 is a deficient number, since it is larger than the sum of its proper divisors (556797).

1670379 is an equidigital number, since it uses as much as digits as its factorization.

1670379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556796.

The product of its (nonzero) digits is 7938, while the sum is 33.

The square root of 1670379 is about 1292.4314295157. The cubic root of 1670379 is about 118.6510740289.

The spelling of 1670379 in words is "one million, six hundred seventy thousand, three hundred seventy-nine".