1277263 has 4 divisors (see below), whose sum is σ = 1375528. Its totient is φ = 1179000.

The previous prime is 1277257. The next prime is 1277267. The reversal of 1277263 is 3627721.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1277263 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 (1277267) 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, 49113 + ... + 49138.

It is an arithmetic number, because the mean of its divisors is an integer number (343882).

2^1277263 is an apocalyptic number.

1277263 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1277263 is a deficient number, since it is larger than the sum of its proper divisors (98265).

1277263 is an equidigital number, since it uses as much as digits as its factorization.

1277263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98264.

The product of its digits is 3528, while the sum is 28.

The square root of 1277263 is about 1130.1606080553. The cubic root of 1277263 is about 108.4992602610.

It can be divided in two parts, 1277 and 263, that added together give a triangular number (1540 = T₅₅).

The spelling of 1277263 in words is "one million, two hundred seventy-seven thousand, two hundred sixty-three".