2353661 has 2 divisors, whose sum is σ = 2353662. Its totient is φ = 2353660.

The previous prime is 2353657. The next prime is 2353697. The reversal of 2353661 is 1663532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1705636 + 648025 = 1306^2 + 805^2 .

It is a cyclic number.

It is not a de Polignac number, because 2353661 - 2² = 2353657 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2353661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2353601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1176830 + 1176831.

It is an arithmetic number, because the mean of its divisors is an integer number (1176831).

2^2353661 is an apocalyptic number.

It is an amenable number.

2353661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2353661 is an equidigital number, since it uses as much as digits as its factorization.

2353661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 26.

The square root of 2353661 is about 1534.1645935166. The cubic root of 2353661 is about 133.0192935623.

The spelling of 2353661 in words is "two million, three hundred fifty-three thousand, six hundred sixty-one".