68011977 has 16 divisors (see below), whose sum is σ = 99072000. Its totient is φ = 41158800.

The previous prime is 68011973. The next prime is 68011981. The reversal of 68011977 is 77911086.

It is an interprime number because it is at equal distance from previous prime (68011973) and next prime (68011981).

It is not a de Polignac number, because 68011977 - 2² = 68011973 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68011973) 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 15 ways as a sum of consecutive naturals, for example, 33024 + ... + 35022.

It is an arithmetic number, because the mean of its divisors is an integer number (6192000).

Almost surely, 2^68011977 is an apocalyptic number.

It is an amenable number.

68011977 is a deficient number, since it is larger than the sum of its proper divisors (31060023).

68011977 is a wasteful number, since it uses less digits than its factorization.

68011977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044.

The product of its (nonzero) digits is 21168, while the sum is 39.

The square root of 68011977 is about 8246.9374315560. The cubic root of 68011977 is about 408.1894725022.

It can be divided in two parts, 6801 and 1977, that added together give a palindrome (8778).

The spelling of 68011977 in words is "sixty-eight million, eleven thousand, nine hundred seventy-seven".