77708243 has 8 divisors (see below), whose sum is σ = 79724736. Its totient is φ = 75697600.

The previous prime is 77708153. The next prime is 77708261. The reversal of 77708243 is 34280777.

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 77708243 - 2¹⁰ = 77707219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77708197 and 77708206.

It is not an unprimeable number, because it can be changed into a prime (77708263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40598 + ... + 42468.

It is an arithmetic number, because the mean of its divisors is an integer number (9965592).

Almost surely, 2^77708243 is an apocalyptic number.

77708243 is a deficient number, since it is larger than the sum of its proper divisors (2016493).

77708243 is a wasteful number, since it uses less digits than its factorization.

77708243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2925.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 77708243 is about 8815.2279040306. The cubic root of 77708243 is about 426.7324768957.

The spelling of 77708243 in words is "seventy-seven million, seven hundred eight thousand, two hundred forty-three".