68205929 has 4 divisors (see below), whose sum is σ = 74406480. Its totient is φ = 62005380.

The previous prime is 68205923. The next prime is 68205959. The reversal of 68205929 is 92950286.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68205929 - 2⁴ = 68205913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68205923) 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, 3100259 + ... + 3100280.

It is an arithmetic number, because the mean of its divisors is an integer number (18601620).

Almost surely, 2^68205929 is an apocalyptic number.

It is an amenable number.

68205929 is a deficient number, since it is larger than the sum of its proper divisors (6200551).

68205929 is a wasteful number, since it uses less digits than its factorization.

68205929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6200550.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 68205929 is about 8258.6880919429. The cubic root of 68205929 is about 408.5771200442.

The spelling of 68205929 in words is "sixty-eight million, two hundred five thousand, nine hundred twenty-nine".