1263061 has 4 divisors (see below), whose sum is σ = 1266412. Its totient is φ = 1259712.

The previous prime is 1263047. The next prime is 1263071. The reversal of 1263061 is 1603621.

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

It can be written as a sum of positive squares in 2 ways, for example, as 820836 + 442225 = 906^2 + 665^2 .

It is a 3-Lehmer number, since φ(1263061) divides (1263061-1)³.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1263061 is a prime.

It is a Duffinian number.

1263061 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1026 + ... + 1891.

It is an arithmetic number, because the mean of its divisors is an integer number (316603).

2^1263061 is an apocalyptic number.

It is an amenable number.

1263061 is a deficient number, since it is larger than the sum of its proper divisors (3351).

1263061 is an equidigital number, since it uses as much as digits as its factorization.

1263061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3350.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1263061 is about 1123.8598667094. The cubic root of 1263061 is about 108.0956229011.

Adding to 1263061 its reverse (1603621), we get a palindrome (2866682).

The spelling of 1263061 in words is "one million, two hundred sixty-three thousand, sixty-one".