1266247345 has 16 divisors (see below), whose sum is σ = 1662103872. Its totient is φ = 918423360.

The previous prime is 1266247249. The next prime is 1266247349. The reversal of 1266247345 is 5437426621.

It is not a de Polignac number, because 1266247345 - 2⁷ = 1266247217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1266247298 and 1266247307.

It is not an unprimeable number, because it can be changed into a prime (1266247349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10347 + ... + 51376.

It is an arithmetic number, because the mean of its divisors is an integer number (103881492).

Almost surely, 2^1266247345 is an apocalyptic number.

It is an amenable number.

1266247345 is a deficient number, since it is larger than the sum of its proper divisors (395856527).

1266247345 is a wasteful number, since it uses less digits than its factorization.

1266247345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62112.

The product of its digits is 241920, while the sum is 40.

The square root of 1266247345 is about 35584.3693916304. The cubic root of 1266247345 is about 1081.8644478002.

The spelling of 1266247345 in words is "one billion, two hundred sixty-six million, two hundred forty-seven thousand, three hundred forty-five".