1261877 has 8 divisors (see below), whose sum is σ = 1331640. Its totient is φ = 1193920.

The previous prime is 1261861. The next prime is 1261889. The reversal of 1261877 is 7781621.

It can be written as a sum of positive squares in 4 ways, for example, as 192721 + 1069156 = 439^2 + 1034^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1261877 - 2⁴ = 1261861 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 (1261837) 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, 1127 + ... + 1947.

It is an arithmetic number, because the mean of its divisors is an integer number (166455).

2^1261877 is an apocalyptic number.

It is an amenable number.

1261877 is a deficient number, since it is larger than the sum of its proper divisors (69763).

1261877 is an equidigital number, since it uses as much as digits as its factorization.

1261877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903.

The product of its digits is 4704, while the sum is 32.

The square root of 1261877 is about 1123.3329871414. The cubic root of 1261877 is about 108.0618358737.

The spelling of 1261877 in words is "one million, two hundred sixty-one thousand, eight hundred seventy-seven".