1266416 has 10 divisors (see below), whose sum is σ = 2453712. Its totient is φ = 633200.

The previous prime is 1266413. The next prime is 1266431. The reversal of 1266416 is 6146621.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39560 + ... + 39591.

2^1266416 is an apocalyptic number.

1266416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1266416 is a deficient number, since it is larger than the sum of its proper divisors (1187296).

1266416 is an equidigital number, since it uses as much as digits as its factorization.

1266416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79159 (or 79153 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 1266416 is about 1125.3515006432. The cubic root of 1266416 is about 108.1912477844.

The spelling of 1266416 in words is "one million, two hundred sixty-six thousand, four hundred sixteen".