660151556 has 12 divisors (see below), whose sum is σ = 1171091292. Its totient is φ = 325554048.

The previous prime is 660151529. The next prime is 660151607. The reversal of 660151556 is 655151066.

It can be written as a sum of positive squares in 2 ways, for example, as 494617600 + 165533956 = 22240^2 + 12866^2 .

It is a super-2 number, since 2×660151556² = 871600153778442272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1130105 + ... + 1130688.

It is an arithmetic number, because the mean of its divisors is an integer number (97590941).

Almost surely, 2^660151556 is an apocalyptic number.

It is an amenable number.

660151556 is a deficient number, since it is larger than the sum of its proper divisors (510939736).

660151556 is a wasteful number, since it uses less digits than its factorization.

660151556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260870 (or 2260868 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 660151556 is about 25693.4146426667. The cubic root of 660151556 is about 870.7254072292.

The spelling of 660151556 in words is "six hundred sixty million, one hundred fifty-one thousand, five hundred fifty-six".