1266993 has 54 divisors (see below), whose sum is σ = 2440854. Its totient is φ = 628992.

The previous prime is 1266953. The next prime is 1267009. The reversal of 1266993 is 3996621.

1266993 = 57³ + 58³ + ... + 62³.

1266993 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in 3 ways, for example, as 28224 + 1238769 = 168^2 + 1113^2 .

It is not a de Polignac number, because 1266993 - 2⁶ = 1266929 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1266913) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 74521 + ... + 74537.

It is an arithmetic number, because the mean of its divisors is an integer number (45201).

2^1266993 is an apocalyptic number.

1266993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1266993 is a deficient number, since it is larger than the sum of its proper divisors (1173861).

1266993 is a wasteful number, since it uses less digits than its factorization.

1266993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63 (or 40 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 1266993 is about 1125.6078357936. The cubic root of 1266993 is about 108.2076765281.

The spelling of 1266993 in words is "one million, two hundred sixty-six thousand, nine hundred ninety-three".