75316609 has 4 divisors (see below), whose sum is σ = 76062420. Its totient is φ = 74570800.

The previous prime is 75316601. The next prime is 75316621. The reversal of 75316609 is 90661357.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90661357 = 17 ⋅5333021.

It can be written as a sum of positive squares in 2 ways, for example, as 68425984 + 6890625 = 8272^2 + 2625^2 .

It is a cyclic number.

It is not a de Polignac number, because 75316609 - 2³ = 75316601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75316601) 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, 372754 + ... + 372955.

It is an arithmetic number, because the mean of its divisors is an integer number (19015605).

Almost surely, 2^75316609 is an apocalyptic number.

It is an amenable number.

75316609 is a deficient number, since it is larger than the sum of its proper divisors (745811).

75316609 is a wasteful number, since it uses less digits than its factorization.

75316609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745810.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 75316609 is about 8678.5142161547. The cubic root of 75316609 is about 422.3089181801.

The spelling of 75316609 in words is "seventy-five million, three hundred sixteen thousand, six hundred nine".