2965681 has 2 divisors, whose sum is σ = 2965682. Its totient is φ = 2965680.

The previous prime is 2965631. The next prime is 2965687. The reversal of 2965681 is 1865692.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2944656 + 21025 = 1716^2 + 145^2 .

It is a cyclic number.

It is not a de Polignac number, because 2965681 - 2¹³ = 2957489 is a prime.

It is a super-2 number, since 2×2965681² = 17590527587522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2965681.

It is not a weakly prime, because it can be changed into another prime (2965687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1482840 + 1482841.

It is an arithmetic number, because the mean of its divisors is an integer number (1482841).

2^2965681 is an apocalyptic number.

It is an amenable number.

2965681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2965681 is an equidigital number, since it uses as much as digits as its factorization.

2965681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The square root of 2965681 is about 1722.1152690804. The cubic root of 2965681 is about 143.6728846625.

The spelling of 2965681 in words is "two million, nine hundred sixty-five thousand, six hundred eighty-one".