68647403527 has 4 divisors (see below), whose sum is σ = 69355108816. Its totient is φ = 67939698240.

The previous prime is 68647403497. The next prime is 68647403557. The reversal of 68647403527 is 72530474686.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (68647403497) and next prime (68647403557).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68647403527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68647403557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353852499 + ... + 353852692.

It is an arithmetic number, because the mean of its divisors is an integer number (17338777204).

Almost surely, 2^68647403527 is an apocalyptic number.

68647403527 is a deficient number, since it is larger than the sum of its proper divisors (707705289).

68647403527 is an equidigital number, since it uses as much as digits as its factorization.

68647403527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707705288.

The product of its (nonzero) digits is 6773760, while the sum is 52.

The spelling of 68647403527 in words is "sixty-eight billion, six hundred forty-seven million, four hundred three thousand, five hundred twenty-seven".