2763661 has 2 divisors, whose sum is σ = 2763662. Its totient is φ = 2763660.

The previous prime is 2763659. The next prime is 2763667. The reversal of 2763661 is 1663672.

2763661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1394761 + 1368900 = 1181^2 + 1170^2 .

It is a cyclic number.

It is not a de Polignac number, because 2763661 - 2¹ = 2763659 is a prime.

Together with 2763659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2763667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1381830 + 1381831.

It is an arithmetic number, because the mean of its divisors is an integer number (1381831).

2^2763661 is an apocalyptic number.

It is an amenable number.

2763661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2763661 is an equidigital number, since it uses as much as digits as its factorization.

2763661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 31.

The square root of 2763661 is about 1662.4262389652. The cubic root of 2763661 is about 140.3335753135. Note that the first 3 decimals are identical.

The spelling of 2763661 in words is "two million, seven hundred sixty-three thousand, six hundred sixty-one".