660661038 has 24 divisors (see below), whose sum is σ = 1515634848. Its totient is φ = 207266112.

The previous prime is 660661037. The next prime is 660661063. The reversal of 660661038 is 830166066.

660661038 is a `hidden beast` number, since 6 + 6 + 0 + 6 + 610 + 38 = 666.

660661038 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 660660993 and 660661011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660661031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1079206 + ... + 1079817.

It is an arithmetic number, because the mean of its divisors is an integer number (63151452).

Almost surely, 2^660661038 is an apocalyptic number.

660661038 is an abundant number, since it is smaller than the sum of its proper divisors (854973810).

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

660661038 is a wasteful number, since it uses less digits than its factorization.

660661038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2159048 (or 2159045 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 660661038 is about 25703.3273721516. The cubic root of 660661038 is about 870.9493481529.

The spelling of 660661038 in words is "six hundred sixty million, six hundred sixty-one thousand, thirty-eight".