1266598 has 12 divisors (see below), whose sum is σ = 1966140. Its totient is φ = 611940.

The previous prime is 1266593. The next prime is 1266611. The reversal of 1266598 is 8956621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1593 + ... + 2251.

It is an arithmetic number, because the mean of its divisors is an integer number (163845).

2^1266598 is an apocalyptic number.

1266598 is a deficient number, since it is larger than the sum of its proper divisors (699542).

1266598 is an equidigital number, since it uses as much as digits as its factorization.

1266598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723 (or 692 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 1266598 is about 1125.4323613616. The cubic root of 1266598 is about 108.1964303532.

It can be divided in two parts, 126 and 6598, that added together give a square (6724 = 82²).

The spelling of 1266598 in words is "one million, two hundred sixty-six thousand, five hundred ninety-eight".