2170704 has 40 divisors (see below), whose sum is σ = 5749632. Its totient is φ = 705280.

The previous prime is 2170703. The next prime is 2170723. The reversal of 2170704 is 4070712.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2170703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1417 + ... + 2519.

2^2170704 is an apocalyptic number.

2170704 is a gapful number since it is divisible by the number (24) 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 2170704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2874816).

2170704 is an abundant number, since it is smaller than the sum of its proper divisors (3578928).

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

2170704 is a wasteful number, since it uses less digits than its factorization.

2170704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155 (or 1149 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 2170704 is about 1473.3309200584. The cubic root of 2170704 is about 129.4792580684.

The spelling of 2170704 in words is "two million, one hundred seventy thousand, seven hundred four".