77713249 has 8 divisors (see below), whose sum is σ = 84442880. Its totient is φ = 71247600.

The previous prime is 77713241. The next prime is 77713267. The reversal of 77713249 is 94231777.

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 77713249 - 2³ = 77713241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77713241) 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, 65382 + ... + 66559.

It is an arithmetic number, because the mean of its divisors is an integer number (10555360).

Almost surely, 2^77713249 is an apocalyptic number.

It is an amenable number.

77713249 is a deficient number, since it is larger than the sum of its proper divisors (6729631).

77713249 is a wasteful number, since it uses less digits than its factorization.

77713249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131991.

The product of its digits is 74088, while the sum is 40.

The square root of 77713249 is about 8815.5118399331. The cubic root of 77713249 is about 426.7416401317.

The spelling of 77713249 in words is "seventy-seven million, seven hundred thirteen thousand, two hundred forty-nine".