2261867 has 4 divisors (see below), whose sum is σ = 2394936. Its totient is φ = 2128800.

The previous prime is 2261863. The next prime is 2261887. The reversal of 2261867 is 7681622.

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

It is a cyclic number.

It is not a de Polignac number, because 2261867 - 2² = 2261863 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2261863) 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, 66509 + ... + 66542.

It is an arithmetic number, because the mean of its divisors is an integer number (598734).

2^2261867 is an apocalyptic number.

2261867 is a deficient number, since it is larger than the sum of its proper divisors (133069).

2261867 is a wasteful number, since it uses less digits than its factorization.

2261867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133068.

The product of its digits is 8064, while the sum is 32.

The square root of 2261867 is about 1503.9504646098. The cubic root of 2261867 is about 131.2670387554.

The spelling of 2261867 in words is "two million, two hundred sixty-one thousand, eight hundred sixty-seven".