68707663277 has 4 divisors (see below), whose sum is σ = 74953814496. Its totient is φ = 62461512060.

The previous prime is 68707663253. The next prime is 68707663289. The reversal of 68707663277 is 77236670786.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68707663277 - 2¹⁰ = 68707662253 is a prime.

It is a super-2 number, since 2×68707663277² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68707663207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3123075593 + ... + 3123075614.

It is an arithmetic number, because the mean of its divisors is an integer number (18738453624).

Almost surely, 2^68707663277 is an apocalyptic number.

It is an amenable number.

68707663277 is a deficient number, since it is larger than the sum of its proper divisors (6246151219).

68707663277 is a wasteful number, since it uses less digits than its factorization.

68707663277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6246151218.

The product of its (nonzero) digits is 24893568, while the sum is 59.

The spelling of 68707663277 in words is "sixty-eight billion, seven hundred seven million, six hundred sixty-three thousand, two hundred seventy-seven".