68266057 has 4 divisors (see below), whose sum is σ = 68289300. Its totient is φ = 68242816.

The previous prime is 68266039. The next prime is 68266063. The reversal of 68266057 is 75066286.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21261321 + 47004736 = 4611^2 + 6856^2 .

It is a cyclic number.

It is not a de Polignac number, because 68266057 - 2²³ = 59877449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68266007) 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, 6448 + ... + 13345.

It is an arithmetic number, because the mean of its divisors is an integer number (17072325).

Almost surely, 2^68266057 is an apocalyptic number.

It is an amenable number.

68266057 is a deficient number, since it is larger than the sum of its proper divisors (23243).

68266057 is a wasteful number, since it uses less digits than its factorization.

68266057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23242.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 68266057 is about 8262.3275776261. The cubic root of 68266057 is about 408.6971472903.

The spelling of 68266057 in words is "sixty-eight million, two hundred sixty-six thousand, fifty-seven".