75006997 has 4 divisors (see below), whose sum is σ = 80776780. Its totient is φ = 69237216.

The previous prime is 75006991. The next prime is 75007001. The reversal of 75006997 is 79960057.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79960057 = 7283 ⋅10979.

It can be written as a sum of positive squares in 2 ways, for example, as 7257636 + 67749361 = 2694^2 + 8231^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75006997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75006991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2884872 + ... + 2884897.

It is an arithmetic number, because the mean of its divisors is an integer number (20194195).

Almost surely, 2^75006997 is an apocalyptic number.

It is an amenable number.

75006997 is a deficient number, since it is larger than the sum of its proper divisors (5769783).

75006997 is a wasteful number, since it uses less digits than its factorization.

75006997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5769782.

The product of its (nonzero) digits is 119070, while the sum is 43.

The square root of 75006997 is about 8660.6580004062. The cubic root of 75006997 is about 421.7294466839.

The spelling of 75006997 in words is "seventy-five million, six thousand, nine hundred ninety-seven".