78706611 has 12 divisors (see below), whose sum is σ = 114731760. Its totient is φ = 51989040.

The previous prime is 78706603. The next prime is 78706631. The reversal of 78706611 is 11660787.

It is a happy number.

It is not a de Polignac number, because 78706611 - 2³ = 78706603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78706631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39135 + ... + 41096.

It is an arithmetic number, because the mean of its divisors is an integer number (9560980).

Almost surely, 2^78706611 is an apocalyptic number.

78706611 is a deficient number, since it is larger than the sum of its proper divisors (36025149).

78706611 is a wasteful number, since it uses less digits than its factorization.

78706611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80346 (or 80343 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 78706611 is about 8871.6746446204. The cubic root of 78706611 is about 428.5522085190.

The spelling of 78706611 in words is "seventy-eight million, seven hundred six thousand, six hundred eleven".