78880711 has 16 divisors (see below), whose sum is σ = 99154944. Its totient is φ = 61079904.

The previous prime is 78880673. The next prime is 78880727. The reversal of 78880711 is 11708887.

It is a cyclic number.

It is not a de Polignac number, because 78880711 - 2⁷ = 78880583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78880751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4945 + ... + 13498.

It is an arithmetic number, because the mean of its divisors is an integer number (6197184).

Almost surely, 2^78880711 is an apocalyptic number.

78880711 is a deficient number, since it is larger than the sum of its proper divisors (20274233).

78880711 is a wasteful number, since it uses less digits than its factorization.

78880711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18510.

The product of its (nonzero) digits is 25088, while the sum is 40.

The square root of 78880711 is about 8881.4813516665. The cubic root of 78880711 is about 428.8679634161.

The spelling of 78880711 in words is "seventy-eight million, eight hundred eighty thousand, seven hundred eleven".