663428070 has 160 divisors (see below), whose sum is σ = 1879701120. Its totient is φ = 167650560.

The previous prime is 663428057. The next prime is 663428071. The reversal of 663428070 is 70824366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663428071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1432659 + ... + 1433121.

It is an arithmetic number, because the mean of its divisors is an integer number (11748132).

Almost surely, 2^663428070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663428070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (939850560).

663428070 is an abundant number, since it is smaller than the sum of its proper divisors (1216273050).

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

663428070 is a wasteful number, since it uses less digits than its factorization.

663428070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572 (or 563 counting only the distinct ones).

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

The square root of 663428070 is about 25757.0974684649. The cubic root of 663428070 is about 872.1635805046.

The spelling of 663428070 in words is "six hundred sixty-three million, four hundred twenty-eight thousand, seventy".