2045656 has 16 divisors (see below), whose sum is σ = 3939840. Its totient is φ = 995040.

The previous prime is 2045653. The next prime is 2045669. The reversal of 2045656 is 6565402.

It is a nialpdrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045651) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 3160 + ... + 3751.

It is an arithmetic number, because the mean of its divisors is an integer number (246240).

2^2045656 is an apocalyptic number.

It is an amenable number.

2045656 is a deficient number, since it is larger than the sum of its proper divisors (1894184).

2045656 is a wasteful number, since it uses less digits than its factorization.

2045656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6954 (or 6950 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 2045656 is about 1430.2643112376. The cubic root of 2045656 is about 126.9436168590.

It can be divided in two parts, 2045 and 656, that added together give a triangular number (2701 = T₇₃).

The spelling of 2045656 in words is "two million, forty-five thousand, six hundred fifty-six".