1666628602 has 8 divisors (see below), whose sum is σ = 2501013312. Its totient is φ = 832957500.

The previous prime is 1666628569. The next prime is 1666628627. The reversal of 1666628602 is 2068266661.

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

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, 172524 + ... + 181927.

It is an arithmetic number, because the mean of its divisors is an integer number (312626664).

Almost surely, 2^1666628602 is an apocalyptic number.

1666628602 is a deficient number, since it is larger than the sum of its proper divisors (834384710).

1666628602 is a wasteful number, since it uses less digits than its factorization.

1666628602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356804.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 1666628602 is about 40824.3628486716. The cubic root of 1666628602 is about 1185.6220752974.

The spelling of 1666628602 in words is "one billion, six hundred sixty-six million, six hundred twenty-eight thousand, six hundred two".