1271764 has 24 divisors (see below), whose sum is σ = 2465288. Its totient is φ = 570240.

The previous prime is 1271749. The next prime is 1271791. The reversal of 1271764 is 4671721.

It can be written as a sum of positive squares in 4 ways, for example, as 384400 + 887364 = 620^2 + 942^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1594 + ... + 2254.

2^1271764 is an apocalyptic number.

It is an amenable number.

1271764 is a deficient number, since it is larger than the sum of its proper divisors (1193524).

1271764 is a wasteful number, since it uses less digits than its factorization.

1271764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715 (or 713 counting only the distinct ones).

The product of its digits is 2352, while the sum is 28.

The square root of 1271764 is about 1127.7251438183. The cubic root of 1271764 is about 108.3433289922.

It can be divided in two parts, 127 and 1764, that added together give a triangular number (1891 = T₆₁).

The spelling of 1271764 in words is "one million, two hundred seventy-one thousand, seven hundred sixty-four".