1266499 has 4 divisors (see below), whose sum is σ = 1363936. Its totient is φ = 1169064.

The previous prime is 1266493. The next prime is 1266511. The reversal of 1266499 is 9946621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9946621 = 1109 ⋅8969.

It is not a de Polignac number, because 1266499 - 2³ = 1266491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1266491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48699 + ... + 48724.

It is an arithmetic number, because the mean of its divisors is an integer number (340984).

2^1266499 is an apocalyptic number.

1266499 is a deficient number, since it is larger than the sum of its proper divisors (97437).

1266499 is an equidigital number, since it uses as much as digits as its factorization.

1266499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97436.

The product of its digits is 23328, while the sum is 37.

The square root of 1266499 is about 1125.3883774058. The cubic root of 1266499 is about 108.1936113252.

It can be divided in two parts, 12664 and 99, that multiplied together give a triangular number (1253736 = T₁₅₈₃).

The spelling of 1266499 in words is "one million, two hundred sixty-six thousand, four hundred ninety-nine".