2631965 has 16 divisors (see below), whose sum is σ = 3642240. Its totient is φ = 1788480.

The previous prime is 2631949. The next prime is 2631971. The reversal of 2631965 is 5691362.

It is a happy number.

It is not a de Polignac number, because 2631965 - 2⁴ = 2631949 is a prime.

It is a super-2 number, since 2×2631965² = 13854479522450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4595 + ... + 5135.

It is an arithmetic number, because the mean of its divisors is an integer number (227640).

2^2631965 is an apocalyptic number.

It is an amenable number.

2631965 is a deficient number, since it is larger than the sum of its proper divisors (1010275).

2631965 is a wasteful number, since it uses less digits than its factorization.

2631965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692.

The product of its digits is 9720, while the sum is 32.

The square root of 2631965 is about 1622.3331963564. Note that the first 3 decimals coincide. The cubic root of 2631965 is about 138.0681068285.

The spelling of 2631965 in words is "two million, six hundred thirty-one thousand, nine hundred sixty-five".