1266536 has 16 divisors (see below), whose sum is σ = 2451840. Its totient is φ = 612720.

The previous prime is 1266527. The next prime is 1266539. The reversal of 1266536 is 6356621.

It is a super-2 number, since 2×1266536² = 3208226878592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1266499 and 1266508.

It is not an unprimeable number, because it can be changed into a prime (1266539) 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, 2306 + ... + 2801.

It is an arithmetic number, because the mean of its divisors is an integer number (153240).

2^1266536 is an apocalyptic number.

It is an amenable number.

1266536 is a deficient number, since it is larger than the sum of its proper divisors (1185304).

1266536 is a wasteful number, since it uses less digits than its factorization.

1266536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5144 (or 5140 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 1266536 is about 1125.4048160551. The cubic root of 1266536 is about 108.1946649185.

The spelling of 1266536 in words is "one million, two hundred sixty-six thousand, five hundred thirty-six".