58687778 has 6 divisors (see below), whose sum is σ = 88047921. Its totient is φ = 29338472.

The previous prime is 58687777. The next prime is 58687781. The reversal of 58687778 is 87778685.

58687778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 45387169 + 13300609 = 6737^2 + 3647^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5417.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (58687777) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 8126 + ... + 13542.

Almost surely, 2^58687778 is an apocalyptic number.

58687778 is a deficient number, since it is larger than the sum of its proper divisors (29360143).

58687778 is an frugal number, since it uses more digits than its factorization.

58687778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10836 (or 5419 counting only the distinct ones).

The product of its digits is 5268480, while the sum is 56.

The square root of 58687778 is about 7660.7948673751. The cubic root of 58687778 is about 388.6117153067.

The spelling of 58687778 in words is "fifty-eight million, six hundred eighty-seven thousand, seven hundred seventy-eight".