75999956 has 6 divisors (see below), whose sum is σ = 132999930. Its totient is φ = 37999976.

The previous prime is 75999953. The next prime is 75999967. The reversal of 75999956 is 65999957.

It can be written as a sum of positive squares in only one way, i.e., 43692100 + 32307856 = 6610^2 + 5684^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75999895 and 75999904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75999953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9499991 + ... + 9499998.

It is an arithmetic number, because the mean of its divisors is an integer number (22166655).

Almost surely, 2^75999956 is an apocalyptic number.

It is an amenable number.

75999956 is a deficient number, since it is larger than the sum of its proper divisors (56999974).

75999956 is a wasteful number, since it uses less digits than its factorization.

75999956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18999993 (or 18999991 counting only the distinct ones).

The product of its digits is 6889050, while the sum is 59.

The square root of 75999956 is about 8717.7953635079. The cubic root of 75999956 is about 423.5822766815.

Subtracting from 75999956 its reverse (65999957), we obtain a palindrome (9999999).

The spelling of 75999956 in words is "seventy-five million, nine hundred ninety-nine thousand, nine hundred fifty-six".