660629641368 has 32 divisors (see below), whose sum is σ = 1652198204160. Its totient is φ = 220126667040.

The previous prime is 660629641349. The next prime is 660629641379. The reversal of 660629641368 is 863146926066.

It is a super-2 number, since 2×660629641368² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5135988 + ... + 5263043.

It is an arithmetic number, because the mean of its divisors is an integer number (51631193880).

Almost surely, 2^660629641368 is an apocalyptic number.

It is an amenable number.

660629641368 is an abundant number, since it is smaller than the sum of its proper divisors (991568562792).

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

660629641368 is a wasteful number, since it uses less digits than its factorization.

660629641368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10401687 (or 10401683 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 57.

The spelling of 660629641368 in words is "six hundred sixty billion, six hundred twenty-nine million, six hundred forty-one thousand, three hundred sixty-eight".