75999997 has 2 divisors, whose sum is σ = 75999998. Its totient is φ = 75999996.

The previous prime is 75999991. The next prime is 76000021. The reversal of 75999997 is 79999957.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50537881 + 25462116 = 7109^2 + 5046^2 .

It is a cyclic number.

It is not a de Polignac number, because 75999997 - 2¹¹ = 75997949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75999991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37999998 + 37999999.

It is an arithmetic number, because the mean of its divisors is an integer number (37999999).

Almost surely, 2^75999997 is an apocalyptic number.

It is an amenable number.

75999997 is a deficient number, since it is larger than the sum of its proper divisors (1).

75999997 is an equidigital number, since it uses as much as digits as its factorization.

75999997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14467005, while the sum is 64.

The square root of 75999997 is about 8717.7977150195. The cubic root of 75999997 is about 423.5823528520.

The spelling of 75999997 in words is "seventy-five million, nine hundred ninety-nine thousand, nine hundred ninety-seven".