75968739 has 32 divisors (see below), whose sum is σ = 140321280. Its totient is φ = 39463200.

The previous prime is 75968723. The next prime is 75968771. The reversal of 75968739 is 93786957.

It is not a de Polignac number, because 75968739 - 2⁴ = 75968723 is a prime.

It is a super-3 number, since 3×75968739³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (75968539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16192 + ... + 20349.

It is an arithmetic number, because the mean of its divisors is an integer number (4385040).

Almost surely, 2^75968739 is an apocalyptic number.

75968739 is a deficient number, since it is larger than the sum of its proper divisors (64352541).

75968739 is a wasteful number, since it uses less digits than its factorization.

75968739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36568 (or 36562 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 75968739 is about 8716.0047613571. The cubic root of 75968739 is about 423.5242732322.

The spelling of 75968739 in words is "seventy-five million, nine hundred sixty-eight thousand, seven hundred thirty-nine".