77678014 has 8 divisors (see below), whose sum is σ = 117992160. Its totient is φ = 38347296.

The previous prime is 77677987. The next prime is 77678053. The reversal of 77678014 is 41087677.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245659 + ... + 245974.

It is an arithmetic number, because the mean of its divisors is an integer number (14749020).

Almost surely, 2^77678014 is an apocalyptic number.

77678014 is a deficient number, since it is larger than the sum of its proper divisors (40314146).

77678014 is a wasteful number, since it uses less digits than its factorization.

77678014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491714.

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 77678014 is about 8813.5131474345. The cubic root of 77678014 is about 426.6771358379.

The spelling of 77678014 in words is "seventy-seven million, six hundred seventy-eight thousand, fourteen".