1262661223 has 4 divisors (see below), whose sum is σ = 1296787240. Its totient is φ = 1228535208.

The previous prime is 1262661203. The next prime is 1262661227. The reversal of 1262661223 is 3221662621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1262661223 - 2¹³ = 1262653031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1262661227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17062953 + ... + 17063026.

It is an arithmetic number, because the mean of its divisors is an integer number (324196810).

Almost surely, 2^1262661223 is an apocalyptic number.

1262661223 is a deficient number, since it is larger than the sum of its proper divisors (34126017).

1262661223 is an equidigital number, since it uses as much as digits as its factorization.

1262661223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34126016.

The product of its digits is 10368, while the sum is 31.

The square root of 1262661223 is about 35533.9446585937. The cubic root of 1262661223 is about 1080.8421709039.

The spelling of 1262661223 in words is "one billion, two hundred sixty-two million, six hundred sixty-one thousand, two hundred twenty-three".