660426246 has 48 divisors (see below), whose sum is σ = 1484892864. Its totient is φ = 211963392.

The previous prime is 660426241. The next prime is 660426257. The reversal of 660426246 is 642624066.

660426246 is a `hidden beast` number, since 6 + 604 + 2 + 6 + 2 + 46 = 666.

660426246 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 self number, because there is not a number n which added to its sum of digits gives 660426246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660426241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59491 + ... + 69713.

It is an arithmetic number, because the mean of its divisors is an integer number (30935268).

Almost surely, 2^660426246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660426246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (742446432).

660426246 is an abundant number, since it is smaller than the sum of its proper divisors (824466618).

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

660426246 is a wasteful number, since it uses less digits than its factorization.

660426246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10365 (or 10362 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 660426246 is about 25698.7596198727. The cubic root of 660426246 is about 870.8461605084.

The spelling of 660426246 in words is "six hundred sixty million, four hundred twenty-six thousand, two hundred forty-six".