77327999 has 4 divisors (see below), whose sum is σ = 88374864. Its totient is φ = 66281136.

The previous prime is 77327977. The next prime is 77328037. The reversal of 77327999 is 99972377.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77327999 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 77327999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77327969) 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 3 ways as a sum of consecutive naturals, for example, 5523422 + ... + 5523435.

It is an arithmetic number, because the mean of its divisors is an integer number (22093716).

Almost surely, 2^77327999 is an apocalyptic number.

77327999 is a deficient number, since it is larger than the sum of its proper divisors (11046865).

77327999 is a wasteful number, since it uses less digits than its factorization.

77327999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11046864.

The product of its digits is 1500282, while the sum is 53.

The square root of 77327999 is about 8793.6340042101. The cubic root of 77327999 is about 426.0353056914.

The spelling of 77327999 in words is "seventy-seven million, three hundred twenty-seven thousand, nine hundred ninety-nine".