2867806 has 4 divisors (see below), whose sum is σ = 4301712. Its totient is φ = 1433902.

The previous prime is 2867797. The next prime is 2867807. The reversal of 2867806 is 6087682.

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

It is a super-2 number, since 2×2867806² = 16448622507272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2867807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 716950 + ... + 716953.

It is an arithmetic number, because the mean of its divisors is an integer number (1075428).

2^2867806 is an apocalyptic number.

2867806 is a deficient number, since it is larger than the sum of its proper divisors (1433906).

2867806 is a wasteful number, since it uses less digits than its factorization.

2867806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433905.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 2867806 is about 1693.4597721824. The cubic root of 2867806 is about 142.0746483131.

The spelling of 2867806 in words is "two million, eight hundred sixty-seven thousand, eight hundred six".