660551046 has 8 divisors (see below), whose sum is σ = 1321102104. Its totient is φ = 220183680.

The previous prime is 660551033. The next prime is 660551083. The reversal of 660551046 is 640155066.

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

660551046 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 660550998 and 660551016.

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 3 ways as a sum of consecutive naturals, for example, 55045915 + ... + 55045926.

It is an arithmetic number, because the mean of its divisors is an integer number (165137763).

Almost surely, 2^660551046 is an apocalyptic number.

660551046 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

660551046 is a wasteful number, since it uses less digits than its factorization.

660551046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110091846.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 660551046 is about 25701.1876379283. The cubic root of 660551046 is about 870.9010113246.

The spelling of 660551046 in words is "six hundred sixty million, five hundred fifty-one thousand, forty-six".