1266407 has 4 divisors (see below), whose sum is σ = 1333080. Its totient is φ = 1199736.

The previous prime is 1266389. The next prime is 1266409. The reversal of 1266407 is 7046621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7046621 = 131 ⋅53791.

It is not a de Polignac number, because 1266407 - 2¹² = 1262311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266409) 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, 33308 + ... + 33345.

It is an arithmetic number, because the mean of its divisors is an integer number (333270).

2^1266407 is an apocalyptic number.

1266407 is a deficient number, since it is larger than the sum of its proper divisors (66673).

1266407 is an equidigital number, since it uses as much as digits as its factorization.

1266407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66672.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 1266407 is about 1125.3475018855. The cubic root of 1266407 is about 108.1909914907.

The spelling of 1266407 in words is "one million, two hundred sixty-six thousand, four hundred seven".