2164867 has 4 divisors (see below), whose sum is σ = 2210976. Its totient is φ = 2118760.

The previous prime is 2164859. The next prime is 2164901. The reversal of 2164867 is 7684612.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2164867 - 2³ = 2164859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2164807) 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, 22984 + ... + 23077.

It is an arithmetic number, because the mean of its divisors is an integer number (552744).

2^2164867 is an apocalyptic number.

2164867 is a deficient number, since it is larger than the sum of its proper divisors (46109).

2164867 is an equidigital number, since it uses as much as digits as its factorization.

2164867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46108.

The product of its digits is 16128, while the sum is 34.

The square root of 2164867 is about 1471.3487010223. The cubic root of 2164867 is about 129.3630977716.

The spelling of 2164867 in words is "two million, one hundred sixty-four thousand, eight hundred sixty-seven".