660420006 has 16 divisors (see below), whose sum is σ = 1321531200. Its totient is φ = 220024808.

The previous prime is 660419971. The next prime is 660420011. The reversal of 660420006 is 600024066.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15936 + ... + 39683.

It is an arithmetic number, because the mean of its divisors is an integer number (82595700).

Almost surely, 2^660420006 is an apocalyptic number.

660420006 is an abundant number, since it is smaller than the sum of its proper divisors (661111194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

660420006 is a wasteful number, since it uses less digits than its factorization.

660420006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57603.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 660420006 is about 25698.6382129482. The cubic root of 660420006 is about 870.8434177862.

The spelling of 660420006 in words is "six hundred sixty million, four hundred twenty thousand, six".