2065631 has 4 divisors (see below), whose sum is σ = 2073264. Its totient is φ = 2058000.

The previous prime is 2065627. The next prime is 2065633. The reversal of 2065631 is 1365602.

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

It is a cyclic number.

It is not a de Polignac number, because 2065631 - 2² = 2065627 is a prime.

It is a super-2 number, since 2×2065631² = 8533662856322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2065597 and 2065606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3395 + ... + 3956.

It is an arithmetic number, because the mean of its divisors is an integer number (518316).

2^2065631 is an apocalyptic number.

2065631 is a deficient number, since it is larger than the sum of its proper divisors (7633).

2065631 is an equidigital number, since it uses as much as digits as its factorization.

2065631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7632.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2065631 is about 1437.2303225301. The cubic root of 2065631 is about 127.3554635354.

The spelling of 2065631 in words is "two million, sixty-five thousand, six hundred thirty-one".