2045686 has 4 divisors (see below), whose sum is σ = 3068532. Its totient is φ = 1022842.

The previous prime is 2045677. The next prime is 2045699. The reversal of 2045686 is 6865402.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511420 + ... + 511423.

It is an arithmetic number, because the mean of its divisors is an integer number (767133).

2^2045686 is an apocalyptic number.

2045686 is a deficient number, since it is larger than the sum of its proper divisors (1022846).

2045686 is a wasteful number, since it uses less digits than its factorization.

2045686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022845.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 2045686 is about 1430.2747987712. The cubic root of 2045686 is about 126.9442374081.

The spelling of 2045686 in words is "two million, forty-five thousand, six hundred eighty-six".