75769513 has 4 divisors (see below), whose sum is σ = 76550740. Its totient is φ = 74988288.

The previous prime is 75769501. The next prime is 75769531. The reversal of 75769513 is 31596757.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45265984 + 30503529 = 6728^2 + 5523^2 .

It is a cyclic number.

It is not a de Polignac number, because 75769513 - 2²⁵ = 42215081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75769513.

It is not an unprimeable number, because it can be changed into a prime (75769543) 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, 390468 + ... + 390661.

It is an arithmetic number, because the mean of its divisors is an integer number (19137685).

Almost surely, 2^75769513 is an apocalyptic number.

It is an amenable number.

75769513 is a deficient number, since it is larger than the sum of its proper divisors (781227).

75769513 is an equidigital number, since it uses as much as digits as its factorization.

75769513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781226.

The product of its digits is 198450, while the sum is 43.

The square root of 75769513 is about 8704.5685131430. The cubic root of 75769513 is about 423.1537220709.

The spelling of 75769513 in words is "seventy-five million, seven hundred sixty-nine thousand, five hundred thirteen".