68212771 has 4 divisors (see below), whose sum is σ = 74413944. Its totient is φ = 62011600.

The previous prime is 68212757. The next prime is 68212777. The reversal of 68212771 is 17721286.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 68212771 - 2¹⁵ = 68180003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68212777) 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, 3100570 + ... + 3100591.

It is an arithmetic number, because the mean of its divisors is an integer number (18603486).

Almost surely, 2^68212771 is an apocalyptic number.

68212771 is a deficient number, since it is larger than the sum of its proper divisors (6201173).

68212771 is a wasteful number, since it uses less digits than its factorization.

68212771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6201172.

The product of its digits is 9408, while the sum is 34.

The square root of 68212771 is about 8259.1023119949. The cubic root of 68212771 is about 408.5907815700.

The spelling of 68212771 in words is "sixty-eight million, two hundred twelve thousand, seven hundred seventy-one".