1670880 has 72 divisors (see below), whose sum is σ = 5353992. Its totient is φ = 438016.

The previous prime is 1670863. The next prime is 1670887. The reversal of 1670880 is 880761.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28291 + ... + 28349.

It is an arithmetic number, because the mean of its divisors is an integer number (74361).

2^1670880 is an apocalyptic number.

1670880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1670880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2676996).

1670880 is an abundant number, since it is smaller than the sum of its proper divisors (3683112).

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

1670880 is an equidigital number, since it uses as much as digits as its factorization.

1670880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 1670880 is about 1292.6252357122. The cubic root of 1670880 is about 118.6629352584.

Multiplying 1670880 by its sum of digits (30), we get a square (50126400 = 7080²).

1670880 divided by its sum of digits (30) gives a square (55696 = 236²).

The spelling of 1670880 in words is "one million, six hundred seventy thousand, eight hundred eighty".