1287913066 has 8 divisors (see below), whose sum is σ = 2107494144. Its totient is φ = 585415020.

The previous prime is 1287913051. The next prime is 1287913111. The reversal of 1287913066 is 6603197821.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29270730 + ... + 29270773.

It is an arithmetic number, because the mean of its divisors is an integer number (263436768).

Almost surely, 2^1287913066 is an apocalyptic number.

1287913066 is a deficient number, since it is larger than the sum of its proper divisors (819581078).

1287913066 is a wasteful number, since it uses less digits than its factorization.

1287913066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58541516.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 1287913066 is about 35887.5057088118. The cubic root of 1287913066 is about 1087.9998856735. Note that the first 3 decimals are identical.

The spelling of 1287913066 in words is "one billion, two hundred eighty-seven million, nine hundred thirteen thousand, sixty-six".