77716347 has 16 divisors (see below), whose sum is σ = 105131520. Its totient is φ = 51061472.

The previous prime is 77716343. The next prime is 77716357. The reversal of 77716347 is 74361777.

It is a cyclic number.

It is not a de Polignac number, because 77716347 - 2² = 77716343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77716299 and 77716308.

It is not an unprimeable number, because it can be changed into a prime (77716343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76213 + ... + 77225.

It is an arithmetic number, because the mean of its divisors is an integer number (6570720).

Almost surely, 2^77716347 is an apocalyptic number.

77716347 is a deficient number, since it is larger than the sum of its proper divisors (27415173).

77716347 is a wasteful number, since it uses less digits than its factorization.

77716347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362.

The product of its digits is 172872, while the sum is 42.

The square root of 77716347 is about 8815.6875511783. The cubic root of 77716347 is about 426.7473106707.

The spelling of 77716347 in words is "seventy-seven million, seven hundred sixteen thousand, three hundred forty-seven".