68204261 has 4 divisors (see below), whose sum is σ = 68841792. Its totient is φ = 67566732.

The previous prime is 68204251. The next prime is 68204267. The reversal of 68204261 is 16240286.

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 68204261 - 2¹⁰ = 68203237 is a prime.

It is a super-2 number, since 2×68204261² = 9303642437112242, 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 (68204267) 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, 318605 + ... + 318818.

It is an arithmetic number, because the mean of its divisors is an integer number (17210448).

Almost surely, 2^68204261 is an apocalyptic number.

It is an amenable number.

68204261 is a deficient number, since it is larger than the sum of its proper divisors (637531).

68204261 is a wasteful number, since it uses less digits than its factorization.

68204261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637530.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 68204261 is about 8258.5871067635. The cubic root of 68204261 is about 408.5737893846.

The spelling of 68204261 in words is "sixty-eight million, two hundred four thousand, two hundred sixty-one".