1266660498 has 32 divisors (see below), whose sum is σ = 2711865600. Its totient is φ = 393216336.

The previous prime is 1266660469. The next prime is 1266660509. The reversal of 1266660498 is 8940666621.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87436 + ... + 100887.

It is an arithmetic number, because the mean of its divisors is an integer number (84745800).

Almost surely, 2^1266660498 is an apocalyptic number.

1266660498 is an abundant number, since it is smaller than the sum of its proper divisors (1445205102).

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

1266660498 is a wasteful number, since it uses less digits than its factorization.

1266660498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188406.

The product of its (nonzero) digits is 746496, while the sum is 48.

The square root of 1266660498 is about 35590.1741777137. The cubic root of 1266660498 is about 1081.9820990999.

The spelling of 1266660498 in words is "one billion, two hundred sixty-six million, six hundred sixty thousand, four hundred ninety-eight".