1670670 has 48 divisors (see below), whose sum is σ = 4577040. Its totient is φ = 421632.

The previous prime is 1670659. The next prime is 1670687. The reversal of 1670670 is 760761.

It is a super-2 number, since 2×1670670² = 5582276497800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1222 + ... + 2198.

It is an arithmetic number, because the mean of its divisors is an integer number (95355).

2^1670670 is an apocalyptic number.

1670670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1670670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2288520).

1670670 is an abundant number, since it is smaller than the sum of its proper divisors (2906370).

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

1670670 is a wasteful number, since it uses less digits than its factorization.

1670670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009 (or 1006 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 1670670 is about 1292.5440031194. The cubic root of 1670670 is about 118.6579637742.

Subtracting from 1670670 its reverse (760761), we obtain a palindrome (909909).

The spelling of 1670670 in words is "one million, six hundred seventy thousand, six hundred seventy".