68302129 has 6 divisors (see below), whose sum is σ = 79453554. Its totient is φ = 58544640.

The previous prime is 68302123. The next prime is 68302133. The reversal of 68302129 is 92120386.

It can be written as a sum of positive squares in only one way, i.e., 68227600 + 74529 = 8260^2 + 273^2 .

It is not a de Polignac number, because 68302129 - 2¹³ = 68293937 is a prime.

It is a super-3 number, since 3×68302129³ (a number of 24 digits) contains 333 as substring.

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 68302129.

It is not an unprimeable number, because it can be changed into a prime (68302123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 696912 + ... + 697009.

It is an arithmetic number, because the mean of its divisors is an integer number (13242259).

Almost surely, 2^68302129 is an apocalyptic number.

It is an amenable number.

68302129 is a deficient number, since it is larger than the sum of its proper divisors (11151425).

68302129 is a wasteful number, since it uses less digits than its factorization.

68302129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393935 (or 1393928 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 68302129 is about 8264.5102093228. The cubic root of 68302129 is about 408.7691202358.

The spelling of 68302129 in words is "sixty-eight million, three hundred two thousand, one hundred twenty-nine".