2307661 has 2 divisors, whose sum is σ = 2307662. Its totient is φ = 2307660.

The previous prime is 2307637. The next prime is 2307677. The reversal of 2307661 is 1667032.

2307661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2232036 + 75625 = 1494^2 + 275^2 .

It is a cyclic number.

It is not a de Polignac number, because 2307661 - 2⁵ = 2307629 is a prime.

2307661 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2307601) 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, 1153830 + 1153831.

It is an arithmetic number, because the mean of its divisors is an integer number (1153831).

2^2307661 is an apocalyptic number.

It is an amenable number.

2307661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2307661 is an equidigital number, since it uses as much as digits as its factorization.

2307661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 2307661 is about 1519.0987459675. The cubic root of 2307661 is about 132.1470086977.

The spelling of 2307661 in words is "two million, three hundred seven thousand, six hundred sixty-one".