75708749 has 8 divisors (see below), whose sum is σ = 79830240. Its totient is φ = 71600976.

The previous prime is 75708733. The next prime is 75708761. The reversal of 75708749 is 94780757.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75708749 - 2⁴ = 75708733 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 (75708719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9119 + ... + 15315.

It is an arithmetic number, because the mean of its divisors is an integer number (9978780).

Almost surely, 2^75708749 is an apocalyptic number.

It is an amenable number.

75708749 is a deficient number, since it is larger than the sum of its proper divisors (4121491).

75708749 is a wasteful number, since it uses less digits than its factorization.

75708749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6859.

The product of its (nonzero) digits is 493920, while the sum is 47.

The square root of 75708749 is about 8701.0774620158. The cubic root of 75708749 is about 423.0405745869.

The spelling of 75708749 in words is "seventy-five million, seven hundred eight thousand, seven hundred forty-nine".