1266612361 has 8 divisors (see below), whose sum is σ = 1451660544. Its totient is φ = 1082590080.

The previous prime is 1266612359. The next prime is 1266612401. The reversal of 1266612361 is 1632166621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1266612361 - 2¹ = 1266612359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1266612301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253825 + ... + 258766.

It is an arithmetic number, because the mean of its divisors is an integer number (181457568).

Almost surely, 2^1266612361 is an apocalyptic number.

It is an amenable number.

1266612361 is a deficient number, since it is larger than the sum of its proper divisors (185048183).

1266612361 is an equidigital number, since it uses as much as digits as its factorization.

1266612361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512951.

The product of its digits is 15552, while the sum is 34.

The square root of 1266612361 is about 35589.4979031736. The cubic root of 1266612361 is about 1081.9683927089.

Adding to 1266612361 its reverse (1632166621), we get a palindrome (2898778982).

The spelling of 1266612361 in words is "one billion, two hundred sixty-six million, six hundred twelve thousand, three hundred sixty-one".