77855713 has 8 divisors (see below), whose sum is σ = 87490368. Its totient is φ = 68741904.

The previous prime is 77855681. The next prime is 77855717. The reversal of 77855713 is 31755877.

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 77855713 - 2⁵ = 77855681 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 77855713.

It is not an unprimeable number, because it can be changed into a prime (77855717) 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, 129895 + ... + 130492.

It is an arithmetic number, because the mean of its divisors is an integer number (10936296).

Almost surely, 2^77855713 is an apocalyptic number.

It is an amenable number.

77855713 is a deficient number, since it is larger than the sum of its proper divisors (9634655).

77855713 is a wasteful number, since it uses less digits than its factorization.

77855713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260423.

The product of its digits is 205800, while the sum is 43.

The square root of 77855713 is about 8823.5884423516. The cubic root of 77855713 is about 427.0022486705.

The spelling of 77855713 in words is "seventy-seven million, eight hundred fifty-five thousand, seven hundred thirteen".