1670860 has 24 divisors (see below), whose sum is σ = 3694320. Its totient is φ = 633024.

The previous prime is 1670857. The next prime is 1670863. The reversal of 1670860 is 680761.

It is an interprime number because it is at equal distance from previous prime (1670857) and next prime (1670863).

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1670863) 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 7 ways as a sum of consecutive naturals, for example, 1819 + ... + 2578.

It is an arithmetic number, because the mean of its divisors is an integer number (153930).

2^1670860 is an apocalyptic number.

1670860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1670860 is an abundant number, since it is smaller than the sum of its proper divisors (2023460).

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

1670860 is a wasteful number, since it uses less digits than its factorization.

1670860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4425 (or 4423 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1670860 is about 1292.6174994947. The cubic root of 1670860 is about 118.6624618017.

Subtracting from 1670860 its reverse (680761), we obtain a palindrome (990099).

It can be divided in two parts, 16 and 70860, that added together give a triangular number (70876 = T₃₇₆).

The spelling of 1670860 in words is "one million, six hundred seventy thousand, eight hundred sixty".