1666664302 has 8 divisors (see below), whose sum is σ = 2500390800. Its totient is φ = 833200704.

The previous prime is 1666664269. The next prime is 1666664317. The reversal of 1666664302 is 2034666661.

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

It is a super-2 number, since 2×1666664302² = 5555539791122294408, which contains 22 as substring.

It is a congruent number.

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, 49027 + ... + 75742.

It is an arithmetic number, because the mean of its divisors is an integer number (312548850).

Almost surely, 2^1666664302 is an apocalyptic number.

1666664302 is a deficient number, since it is larger than the sum of its proper divisors (833726498).

1666664302 is a wasteful number, since it uses less digits than its factorization.

1666664302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131450.

The product of its (nonzero) digits is 186624, while the sum is 40.

The square root of 1666664302 is about 40824.8000852423. The cubic root of 1666664302 is about 1185.6305407720.

The spelling of 1666664302 in words is "one billion, six hundred sixty-six million, six hundred sixty-four thousand, three hundred two".