77687054 has 32 divisors (see below), whose sum is σ = 126683136. Its totient is φ = 35624160.

The previous prime is 77687053. The next prime is 77687089. The reversal of 77687054 is 45078677.

It is a junction number, because it is equal to n+sod(n) for n = 77686996 and 77687014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77687053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223709 + ... + 224055.

It is an arithmetic number, because the mean of its divisors is an integer number (3958848).

Almost surely, 2^77687054 is an apocalyptic number.

77687054 is a deficient number, since it is larger than the sum of its proper divisors (48996082).

77687054 is a wasteful number, since it uses less digits than its factorization.

77687054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560.

The product of its (nonzero) digits is 329280, while the sum is 44.

The square root of 77687054 is about 8814.0259813549. The cubic root of 77687054 is about 426.6936871180.

The spelling of 77687054 in words is "seventy-seven million, six hundred eighty-seven thousand, fifty-four".