2065651 has 8 divisors (see below), whose sum is σ = 2371680. Its totient is φ = 1762368.

The previous prime is 2065639. The next prime is 2065663. The reversal of 2065651 is 1565602.

2065651 = T₄₃₃ + T₄₃₄ + ... + T₄₅₃.

It is an interprime number because it is at equal distance from previous prime (2065639) and next prime (2065663).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2065651 - 2⁷ = 2065523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2065751) 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 7 ways as a sum of consecutive naturals, for example, 1335 + ... + 2431.

It is an arithmetic number, because the mean of its divisors is an integer number (296460).

2^2065651 is an apocalyptic number.

2065651 is a deficient number, since it is larger than the sum of its proper divisors (306029).

2065651 is a wasteful number, since it uses less digits than its factorization.

2065651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2065651 is about 1437.2372803403. The cubic root of 2065651 is about 127.3558745641.

The spelling of 2065651 in words is "two million, sixty-five thousand, six hundred fifty-one".