1266652385 has 8 divisors (see below), whose sum is σ = 1599982080. Its totient is φ = 959989104.

The previous prime is 1266652367. The next prime is 1266652393. The reversal of 1266652385 is 5832566621.

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 1266652385 - 2¹⁰ = 1266651361 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6666497 + ... + 6666686.

It is an arithmetic number, because the mean of its divisors is an integer number (199997760).

Almost surely, 2^1266652385 is an apocalyptic number.

It is an amenable number.

1266652385 is a deficient number, since it is larger than the sum of its proper divisors (333329695).

1266652385 is a wasteful number, since it uses less digits than its factorization.

1266652385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13333207.

The product of its digits is 518400, while the sum is 44.

The square root of 1266652385 is about 35590.0601994433. The cubic root of 1266652385 is about 1081.9797890519.

The spelling of 1266652385 in words is "one billion, two hundred sixty-six million, six hundred fifty-two thousand, three hundred eighty-five".