2170073 has 4 divisors (see below), whose sum is σ = 2264448. Its totient is φ = 2075700.

The previous prime is 2170061. The next prime is 2170109. The reversal of 2170073 is 3700712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2170073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2170043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47153 + ... + 47198.

It is an arithmetic number, because the mean of its divisors is an integer number (566112).

2^2170073 is an apocalyptic number.

2170073 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2170073 is a deficient number, since it is larger than the sum of its proper divisors (94375).

2170073 is an equidigital number, since it uses as much as digits as its factorization.

2170073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94374.

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 2170073 is about 1473.1167638718. The cubic root of 2170073 is about 129.4667107827.

Adding to 2170073 its reverse (3700712), we get a palindrome (5870785).

The spelling of 2170073 in words is "two million, one hundred seventy thousand, seventy-three".