75430747 has 6 divisors (see below), whose sum is σ = 87746028. Its totient is φ = 64654884.

The previous prime is 75430699. The next prime is 75430757. The reversal of 75430747 is 74703457.

It is a de Polignac number, because none of the positive numbers 2^k-75430747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75430757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 769653 + ... + 769750.

It is an arithmetic number, because the mean of its divisors is an integer number (14624338).

Almost surely, 2^75430747 is an apocalyptic number.

75430747 is a deficient number, since it is larger than the sum of its proper divisors (12315281).

75430747 is a wasteful number, since it uses less digits than its factorization.

75430747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539417 (or 1539410 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 37.

The square root of 75430747 is about 8685.0876218954. The cubic root of 75430747 is about 422.5221388210.

The spelling of 75430747 in words is "seventy-five million, four hundred thirty thousand, seven hundred forty-seven".