666087146 has 8 divisors (see below), whose sum is σ = 1017982404. Its totient is φ = 326759680.

The previous prime is 666087137. The next prime is 666087179. The reversal of 666087146 is 641780666.

It can be written as a sum of positive squares in 2 ways, for example, as 662496121 + 3591025 = 25739^2 + 1895^2 .

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 = 666087097 and 666087106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3141815 + ... + 3142026.

Almost surely, 2^666087146 is an apocalyptic number.

666087146 is a deficient number, since it is larger than the sum of its proper divisors (351895258).

666087146 is a wasteful number, since it uses less digits than its factorization.

666087146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6283896.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 666087146 is about 25808.6641653535. The cubic root of 666087146 is about 873.3272623875.

The spelling of 666087146 in words is "six hundred sixty-six million, eighty-seven thousand, one hundred forty-six".