1277868 has 24 divisors (see below), whose sum is σ = 3019968. Its totient is φ = 420496.

The previous prime is 1277867. The next prime is 1277879. The reversal of 1277868 is 8687721.

It is not an unprimeable number, because it can be changed into a prime (1277863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355 + ... + 1637.

It is an arithmetic number, because the mean of its divisors is an integer number (125832).

2^1277868 is an apocalyptic number.

It is an amenable number.

1277868 is an abundant number, since it is smaller than the sum of its proper divisors (1742100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1277868 is a wasteful number, since it uses less digits than its factorization.

1277868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373 (or 1371 counting only the distinct ones).

The product of its digits is 37632, while the sum is 39.

The square root of 1277868 is about 1130.4282374392. The cubic root of 1277868 is about 108.5163884721.

It can be divided in two parts, 1277 and 868, that added together give a triangular number (2145 = T₆₅).

The spelling of 1277868 in words is "one million, two hundred seventy-seven thousand, eight hundred sixty-eight".