1261766 has 16 divisors (see below), whose sum is σ = 2092608. Its totient is φ = 565800.

The previous prime is 1261763. The next prime is 1261769. The reversal of 1261766 is 6671621.

It is an interprime number because it is at equal distance from previous prime (1261763) and next prime (1261769).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261763) 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, 1481 + ... + 2171.

It is an arithmetic number, because the mean of its divisors is an integer number (130788).

2^1261766 is an apocalyptic number.

1261766 is a deficient number, since it is larger than the sum of its proper divisors (830842).

1261766 is a wasteful number, since it uses less digits than its factorization.

1261766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787.

The product of its digits is 3024, while the sum is 29.

The square root of 1261766 is about 1123.2835795114. The cubic root of 1261766 is about 108.0586672565.

The spelling of 1261766 in words is "one million, two hundred sixty-one thousand, seven hundred sixty-six".