262243661 has 2 divisors, whose sum is σ = 262243662. Its totient is φ = 262243660.

The previous prime is 262243637. The next prime is 262243699. The reversal of 262243661 is 166342262.

262243661 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., 219602761 + 42640900 = 14819^2 + 6530^2 .

It is a cyclic number.

It is not a de Polignac number, because 262243661 - 2¹⁰ = 262242637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (262243621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131121830 + 131121831.

It is an arithmetic number, because the mean of its divisors is an integer number (131121831).

Almost surely, 2^262243661 is an apocalyptic number.

It is an amenable number.

262243661 is a deficient number, since it is larger than the sum of its proper divisors (1).

262243661 is an equidigital number, since it uses as much as digits as its factorization.

262243661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 32.

The square root of 262243661 is about 16193.9390205101. The cubic root of 262243661 is about 640.0810940536.

The spelling of 262243661 in words is "two hundred sixty-two million, two hundred forty-three thousand, six hundred sixty-one".