660556142 has 32 divisors (see below), whose sum is σ = 1053803520. Its totient is φ = 310021600.

The previous prime is 660556133. The next prime is 660556151. The reversal of 660556142 is 241655066.

It is an interprime number because it is at equal distance from previous prime (660556133) and next prime (660556151).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454517 + ... + 455967.

It is an arithmetic number, because the mean of its divisors is an integer number (32931360).

Almost surely, 2^660556142 is an apocalyptic number.

660556142 is a deficient number, since it is larger than the sum of its proper divisors (393247378).

660556142 is a wasteful number, since it uses less digits than its factorization.

660556142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 660556142 is about 25701.2867771246. The cubic root of 660556142 is about 870.9032509194.

The spelling of 660556142 in words is "six hundred sixty million, five hundred fifty-six thousand, one hundred forty-two".