68397727 has 4 divisors (see below), whose sum is σ = 69221880. Its totient is φ = 67573576.

The previous prime is 68397709. The next prime is 68397731. The reversal of 68397727 is 72779386.

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

It is a cyclic number.

It is not a de Polignac number, because 68397727 - 2¹⁹ = 67873439 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 (68397787) 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, 411952 + ... + 412117.

It is an arithmetic number, because the mean of its divisors is an integer number (17305470).

Almost surely, 2^68397727 is an apocalyptic number.

68397727 is a deficient number, since it is larger than the sum of its proper divisors (824153).

68397727 is an equidigital number, since it uses as much as digits as its factorization.

68397727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824152.

The product of its digits is 889056, while the sum is 49.

The square root of 68397727 is about 8270.2918328194. The cubic root of 68397727 is about 408.9597404194.

The spelling of 68397727 in words is "sixty-eight million, three hundred ninety-seven thousand, seven hundred twenty-seven".