1267669 has 8 divisors (see below), whose sum is σ = 1375640. Its totient is φ = 1168128.

The previous prime is 1267663. The next prime is 1267681. The reversal of 1267669 is 9667621.

It can be written as a sum of positive squares in 4 ways, for example, as 68644 + 1199025 = 262^2 + 1095^2 .

It is not a de Polignac number, because 1267669 - 2⁹ = 1267157 is a prime.

It is a super-2 number, since 2×1267669² = 3213969387122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1267663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1909 + ... + 2485.

It is an arithmetic number, because the mean of its divisors is an integer number (171955).

2^1267669 is an apocalyptic number.

It is an amenable number.

1267669 is a deficient number, since it is larger than the sum of its proper divisors (107971).

1267669 is an frugal number, since it uses more digits than its factorization.

1267669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616 (or 590 counting only the distinct ones).

The product of its digits is 27216, while the sum is 37.

The square root of 1267669 is about 1125.9080779531. The cubic root of 1267669 is about 108.2269177246.

It can be divided in two parts, 1267 and 669, that added together give a square (1936 = 44²).

The spelling of 1267669 in words is "one million, two hundred sixty-seven thousand, six hundred sixty-nine".