1266367487 has 24 divisors (see below), whose sum is σ = 1593446400. Its totient is φ = 985145040.

The previous prime is 1266367463. The next prime is 1266367489. The reversal of 1266367487 is 7847636621.

It is not a de Polignac number, because 1266367487 - 2⁸ = 1266367231 is a prime.

It is a super-2 number, since 2×1266367487² = 3207373224261390338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266367489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 879314 + ... + 880752.

It is an arithmetic number, because the mean of its divisors is an integer number (66393600).

Almost surely, 2^1266367487 is an apocalyptic number.

1266367487 is a deficient number, since it is larger than the sum of its proper divisors (327078913).

1266367487 is a wasteful number, since it uses less digits than its factorization.

1266367487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2507 (or 2496 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 50.

The square root of 1266367487 is about 35586.0574804234. The cubic root of 1266367487 is about 1081.8986626131.

The spelling of 1266367487 in words is "one billion, two hundred sixty-six million, three hundred sixty-seven thousand, four hundred eighty-seven".