2870806 has 4 divisors (see below), whose sum is σ = 4306212. Its totient is φ = 1435402.

The previous prime is 2870801. The next prime is 2870821. The reversal of 2870806 is 6080782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6080782 = 2 ⋅3040391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2870801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 717700 + ... + 717703.

It is an arithmetic number, because the mean of its divisors is an integer number (1076553).

2^2870806 is an apocalyptic number.

2870806 is a deficient number, since it is larger than the sum of its proper divisors (1435406).

2870806 is a wasteful number, since it uses less digits than its factorization.

2870806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435405.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 2870806 is about 1694.3453012890. The cubic root of 2870806 is about 142.1241722822.

The spelling of 2870806 in words is "two million, eight hundred seventy thousand, eight hundred six".