68029669 has 4 divisors (see below), whose sum is σ = 68055340. Its totient is φ = 68004000.

The previous prime is 68029657. The next prime is 68029673. The reversal of 68029669 is 96692086.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96692086 = 2 ⋅48346043.

It can be written as a sum of positive squares in 2 ways, for example, as 54612100 + 13417569 = 7390^2 + 3663^2 .

It is a cyclic number.

It is not a de Polignac number, because 68029669 - 2⁷ = 68029541 is a prime.

It is a super-2 number, since 2×68029669² = 9256071728499122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68029769) 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 3 ways as a sum of consecutive naturals, for example, 8334 + ... + 14335.

It is an arithmetic number, because the mean of its divisors is an integer number (17013835).

Almost surely, 2^68029669 is an apocalyptic number.

It is an amenable number.

68029669 is a deficient number, since it is larger than the sum of its proper divisors (25671).

68029669 is a wasteful number, since it uses less digits than its factorization.

68029669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25670.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 68029669 is about 8248.0100024188. The cubic root of 68029669 is about 408.2248636316.

It can be divided in two parts, 6802 and 9669, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 68029669 in words is "sixty-eight million, twenty-nine thousand, six hundred sixty-nine".