76397609 has 8 divisors (see below), whose sum is σ = 83501568. Its totient is φ = 69583680.

The previous prime is 76397603. The next prime is 76397641. The reversal of 76397609 is 90679367.

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 76397609 - 2⁴ = 76397593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76397603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71957 + ... + 73010.

It is an arithmetic number, because the mean of its divisors is an integer number (10437696).

Almost surely, 2^76397609 is an apocalyptic number.

It is an amenable number.

76397609 is a deficient number, since it is larger than the sum of its proper divisors (7103959).

76397609 is a wasteful number, since it uses less digits than its factorization.

76397609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145015.

The product of its (nonzero) digits is 428652, while the sum is 47.

The square root of 76397609 is about 8740.5725784985. The cubic root of 76397609 is about 424.3197588679.

The spelling of 76397609 in words is "seventy-six million, three hundred ninety-seven thousand, six hundred nine".