1666425710 has 8 divisors (see below), whose sum is σ = 2999566296. Its totient is φ = 666570280.

The previous prime is 1666425701. The next prime is 1666425713. The reversal of 1666425710 is 175246661.

1666425710 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666425713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83321276 + ... + 83321295.

It is an arithmetic number, because the mean of its divisors is an integer number (374945787).

Almost surely, 2^1666425710 is an apocalyptic number.

1666425710 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1666425710 is a deficient number, since it is larger than the sum of its proper divisors (1333140586).

1666425710 is a wasteful number, since it uses less digits than its factorization.

1666425710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166642578.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 1666425710 is about 40821.8778352981. The cubic root of 1666425710 is about 1185.5739615993.

The spelling of 1666425710 in words is "one billion, six hundred sixty-six million, four hundred twenty-five thousand, seven hundred ten".