1500006666 has 8 divisors (see below), whose sum is σ = 3000013344. Its totient is φ = 500002220.

The previous prime is 1500006631. The next prime is 1500006667. The reversal of 1500006666 is 6666000051.

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

1500006666 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1500006667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125000550 + ... + 125000561.

It is an arithmetic number, because the mean of its divisors is an integer number (375001668).

Almost surely, 2^1500006666 is an apocalyptic number.

1500006666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1500006666 is a wasteful number, since it uses less digits than its factorization.

1500006666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250001116.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1500006666 is about 38729.9195196685. The cubic root of 1500006666 is about 1144.7159382542.

The spelling of 1500006666 in words is "one billion, five hundred million, six thousand, six hundred sixty-six".