660234078 has 80 divisors (see below), whose sum is σ = 1779803520. Its totient is φ = 178704144.

The previous prime is 660234077. The next prime is 660234079. The reversal of 660234078 is 870432066.

660234078 is a `hidden beast` number, since 6 + 602 + 3 + 40 + 7 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (660234077) and next prime (660234079).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660234073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6225 + ... + 36867.

It is an arithmetic number, because the mean of its divisors is an integer number (22247544).

Almost surely, 2^660234078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660234078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (889901760).

660234078 is an abundant number, since it is smaller than the sum of its proper divisors (1119569442).

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

660234078 is a wasteful number, since it uses less digits than its factorization.

660234078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30683 (or 30674 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 660234078 is about 25695.0204903596. The cubic root of 660234078 is about 870.7616872862.

The spelling of 660234078 in words is "six hundred sixty million, two hundred thirty-four thousand, seventy-eight".