660608494 has 36 divisors (see below), whose sum is σ = 1248215184. Its totient is φ = 261333072.

The previous prime is 660608479. The next prime is 660608513. The reversal of 660608494 is 494806066.

660608494 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×660608494³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 660608494.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3382 + ... + 36505.

It is an arithmetic number, because the mean of its divisors is an integer number (34672644).

Almost surely, 2^660608494 is an apocalyptic number.

660608494 is a deficient number, since it is larger than the sum of its proper divisors (587606690).

660608494 is a wasteful number, since it uses less digits than its factorization.

660608494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39929 (or 39909 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 660608494 is about 25702.3052273527. The cubic root of 660608494 is about 870.9262579583.

The spelling of 660608494 in words is "six hundred sixty million, six hundred eight thousand, four hundred ninety-four".