1266060540 has 48 divisors (see below), whose sum is σ = 3667214880. Its totient is φ = 325973760.

The previous prime is 1266060539. The next prime is 1266060541. The reversal of 1266060540 is 450606621.

It is an interprime number because it is at equal distance from previous prime (1266060539) and next prime (1266060541).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1266060498 and 1266060507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266060541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362071 + ... + 365550.

It is an arithmetic number, because the mean of its divisors is an integer number (76400310).

Almost surely, 2^1266060540 is an apocalyptic number.

1266060540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1266060540 is an abundant number, since it is smaller than the sum of its proper divisors (2401154340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1266060540 is a wasteful number, since it uses less digits than its factorization.

1266060540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727662 (or 727660 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1266060540 is about 35581.7444766273. The cubic root of 1266060540 is about 1081.8112439697.

The spelling of 1266060540 in words is "one billion, two hundred sixty-six million, sixty thousand, five hundred forty".