68514121 has 12 divisors (see below), whose sum is σ = 76201932. Its totient is φ = 61528896.

The previous prime is 68514113. The next prime is 68514139. The reversal of 68514121 is 12141586.

It can be written as a sum of positive squares in 6 ways, for example, as 698896 + 67815225 = 836^2 + 8235^2 .

It is not a de Polignac number, because 68514121 - 2³ = 68514113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68514121.

It is not an unprimeable number, because it can be changed into a prime (68514151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 775 + ... + 11731.

It is an arithmetic number, because the mean of its divisors is an integer number (6350161).

Almost surely, 2^68514121 is an apocalyptic number.

It is an amenable number.

68514121 is a deficient number, since it is larger than the sum of its proper divisors (7687811).

68514121 is a wasteful number, since it uses less digits than its factorization.

68514121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11020 (or 11007 counting only the distinct ones).

The product of its digits is 1920, while the sum is 28.

The square root of 68514121 is about 8277.3257154712. The cubic root of 68514121 is about 409.1915877174.

It can be divided in two parts, 68514 and 121, that added together give a triangular number (68635 = T₃₇₀).

The spelling of 68514121 in words is "sixty-eight million, five hundred fourteen thousand, one hundred twenty-one".