75577609 has 4 divisors (see below), whose sum is σ = 78863616. Its totient is φ = 72291604.

The previous prime is 75577603. The next prime is 75577639. The reversal of 75577609 is 90677557.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90677557 = 19 ⋅4772503.

It is a cyclic number.

It is not a de Polignac number, because 75577609 - 2⁹ = 75577097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75577603) 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, 1642969 + ... + 1643014.

It is an arithmetic number, because the mean of its divisors is an integer number (19715904).

Almost surely, 2^75577609 is an apocalyptic number.

It is an amenable number.

75577609 is a deficient number, since it is larger than the sum of its proper divisors (3286007).

75577609 is a wasteful number, since it uses less digits than its factorization.

75577609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3286006.

The product of its (nonzero) digits is 463050, while the sum is 46.

The square root of 75577609 is about 8693.5383475315. The cubic root of 75577609 is about 422.7961748109.

The spelling of 75577609 in words is "seventy-five million, five hundred seventy-seven thousand, six hundred nine".