250000066 has 8 divisors (see below), whose sum is σ = 377737740. Its totient is φ = 124087488.

The previous prime is 250000019. The next prime is 250000073. The reversal of 250000066 is 660000052.

It can be written as a sum of positive squares in 2 ways, for example, as 239599441 + 10400625 = 15479^2 + 3225^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 249999998 and 250000052.

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, 455931 + ... + 456478.

Almost surely, 2^250000066 is an apocalyptic number.

250000066 is a deficient number, since it is larger than the sum of its proper divisors (127737674).

250000066 is a wasteful number, since it uses less digits than its factorization.

250000066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912548.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 250000066 is about 15811.3903879450. The cubic root of 250000066 is about 629.9605803840.

The spelling of 250000066 in words is "two hundred fifty million, sixty-six", and thus it is an aban number.