1263361 has 12 divisors (see below), whose sum is σ = 1422036. Its totient is φ = 1121120.

The previous prime is 1263347. The next prime is 1263373. The reversal of 1263361 is 1633621.

It can be written as a sum of positive squares in 2 ways, for example, as 1115136 + 148225 = 1056^2 + 385^2 .

It is not a de Polignac number, because 1263361 - 2¹¹ = 1261313 is a prime.

1263361 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1263331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6315 + ... + 6511.

It is an arithmetic number, because the mean of its divisors is an integer number (118503).

2^1263361 is an apocalyptic number.

1263361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1263361 is a deficient number, since it is larger than the sum of its proper divisors (158675).

1263361 is a wasteful number, since it uses less digits than its factorization.

1263361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 261 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

The square root of 1263361 is about 1123.9933273823. The cubic root of 1263361 is about 108.1041804502.

Adding to 1263361 its reverse (1633621), we get a palindrome (2896982).

It can be divided in two parts, 1 and 263361, that added together give a palindrome (263362).

The spelling of 1263361 in words is "one million, two hundred sixty-three thousand, three hundred sixty-one".