1261667 has 6 divisors (see below), whose sum is σ = 1386924. Its totient is φ = 1146860.

The previous prime is 1261649. The next prime is 1261697. The reversal of 1261667 is 7661621.

It is not a de Polignac number, because 1261667 - 2⁸ = 1261411 is a prime.

It is a pancake number, because a pancake can be divided into 1261667 parts by 1588 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (1261627) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5093 + ... + 5334.

It is an arithmetic number, because the mean of its divisors is an integer number (231154).

2^1261667 is an apocalyptic number.

1261667 is a deficient number, since it is larger than the sum of its proper divisors (125257).

1261667 is a wasteful number, since it uses less digits than its factorization.

1261667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10449 (or 10438 counting only the distinct ones).

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

The square root of 1261667 is about 1123.2395114133. The cubic root of 1261667 is about 108.0558410357.

The spelling of 1261667 in words is "one million, two hundred sixty-one thousand, six hundred sixty-seven".