2164743 has 12 divisors (see below), whose sum is σ = 3573648. Its totient is φ = 1236960.

The previous prime is 2164739. The next prime is 2164787. The reversal of 2164743 is 3474612.

It is not a de Polignac number, because 2164743 - 2² = 2164739 is a prime.

It is a super-2 number, since 2×2164743² = 9372224512098, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 6 + 4⁶ + 7³ + 4⁶ + 3¹⁰ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164843) 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, 17118 + ... + 17243.

It is an arithmetic number, because the mean of its divisors is an integer number (297804).

2^2164743 is an apocalyptic number.

2164743 is a deficient number, since it is larger than the sum of its proper divisors (1408905).

2164743 is a wasteful number, since it uses less digits than its factorization.

2164743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34374 (or 34371 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 2164743 is about 1471.3065622092. The cubic root of 2164743 is about 129.3606278231.

The spelling of 2164743 in words is "two million, one hundred sixty-four thousand, seven hundred forty-three".