2632781 has 2 divisors, whose sum is σ = 2632782. Its totient is φ = 2632780.

The previous prime is 2632759. The next prime is 2632789. The reversal of 2632781 is 1872362.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2128681 + 504100 = 1459^2 + 710^2 .

It is a cyclic number.

It is not a de Polignac number, because 2632781 - 2⁶ = 2632717 is a prime.

It is a super-2 number, since 2×2632781² = 13863071587922, which contains 22 as substring.

It is a Chen prime.

It is a zygodrome in base 5.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2632789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1316390 + 1316391.

It is an arithmetic number, because the mean of its divisors is an integer number (1316391).

2^2632781 is an apocalyptic number.

It is an amenable number.

2632781 is a deficient number, since it is larger than the sum of its proper divisors (1).

2632781 is an equidigital number, since it uses as much as digits as its factorization.

2632781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 2632781 is about 1622.5846665120. The cubic root of 2632781 is about 138.0823739805.

The spelling of 2632781 in words is "two million, six hundred thirty-two thousand, seven hundred eighty-one".