2987806 has 4 divisors (see below), whose sum is σ = 4481712. Its totient is φ = 1493902.

The previous prime is 2987791. The next prime is 2987821. The reversal of 2987806 is 6087892.

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

It is an interprime number because it is at equal distance from previous prime (2987791) and next prime (2987821).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 746950 + ... + 746953.

It is an arithmetic number, because the mean of its divisors is an integer number (1120428).

2^2987806 is an apocalyptic number.

2987806 is a deficient number, since it is larger than the sum of its proper divisors (1493906).

2987806 is a wasteful number, since it uses less digits than its factorization.

2987806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493905.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 2987806 is about 1728.5271186765. The cubic root of 2987806 is about 144.0292828823.

The spelling of 2987806 in words is "two million, nine hundred eighty-seven thousand, eight hundred six".