75663396 has 144 divisors (see below), whose sum is σ = 221981760. Its totient is φ = 22394880.

The previous prime is 75663391. The next prime is 75663397. The reversal of 75663396 is 69336657.

75663396 is a `hidden beast` number, since 7 + 5 + 6 + 633 + 9 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (75663391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 313836 + ... + 314076.

It is an arithmetic number, because the mean of its divisors is an integer number (1541540).

Almost surely, 2^75663396 is an apocalyptic number.

75663396 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75663396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110990880).

75663396 is an abundant number, since it is smaller than the sum of its proper divisors (146318364).

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

75663396 is a wasteful number, since it uses less digits than its factorization.

75663396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 282 counting only the distinct ones).

The product of its digits is 612360, while the sum is 45.

The square root of 75663396 is about 8698.4709001065. The cubic root of 75663396 is about 422.9560841688.

The spelling of 75663396 in words is "seventy-five million, six hundred sixty-three thousand, three hundred ninety-six".