678636061287 has 16 divisors (see below), whose sum is σ = 958630613760. Its totient is φ = 425563673472.

The previous prime is 678636061277. The next prime is 678636061289. The reversal of 678636061287 is 782160636876.

It is not a de Polignac number, because 678636061287 - 2²⁶ = 678568952423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 678636061287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678636061289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3773587 + ... + 3949332.

It is an arithmetic number, because the mean of its divisors is an integer number (59914413360).

Almost surely, 2^678636061287 is an apocalyptic number.

678636061287 is a deficient number, since it is larger than the sum of its proper divisors (279994552473).

678636061287 is a wasteful number, since it uses less digits than its factorization.

678636061287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7724662.

The product of its (nonzero) digits is 24385536, while the sum is 60.

The spelling of 678636061287 in words is "six hundred seventy-eight billion, six hundred thirty-six million, sixty-one thousand, two hundred eighty-seven".