1263223477 has 2 divisors, whose sum is σ = 1263223478. Its totient is φ = 1263223476.

The previous prime is 1263223469. The next prime is 1263223483. The reversal of 1263223477 is 7743223621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 857845521 + 405377956 = 29289^2 + 20134^2 .

It is a cyclic number.

It is not a de Polignac number, because 1263223477 - 2³ = 1263223469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263223487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631611738 + 631611739.

It is an arithmetic number, because the mean of its divisors is an integer number (631611739).

Almost surely, 2^1263223477 is an apocalyptic number.

It is an amenable number.

1263223477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263223477 is an equidigital number, since it uses as much as digits as its factorization.

1263223477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 37.

The square root of 1263223477 is about 35541.8552835949. The cubic root of 1263223477 is about 1081.0025775230.

The spelling of 1263223477 in words is "one billion, two hundred sixty-three million, two hundred twenty-three thousand, four hundred seventy-seven".