1671090 has 32 divisors (see below), whose sum is σ = 4090176. Its totient is φ = 436800.

The previous prime is 1671077. The next prime is 1671097. The reversal of 1671090 is 901761.

It is a self number, because there is not a number n which added to its sum of digits gives 1671090.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1671097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1065 + ... + 2115.

It is an arithmetic number, because the mean of its divisors is an integer number (127818).

2^1671090 is an apocalyptic number.

1671090 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 1671090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2045088).

1671090 is an abundant number, since it is smaller than the sum of its proper divisors (2419086).

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

1671090 is a wasteful number, since it uses less digits than its factorization.

1671090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 1671090 is about 1292.7064632004. The cubic root of 1671090 is about 118.6679063260.

The spelling of 1671090 in words is "one million, six hundred seventy-one thousand, ninety".