68022077 has 4 divisors (see below), whose sum is σ = 68786460. Its totient is φ = 67257696.

The previous prime is 68022061. The next prime is 68022079. The reversal of 68022077 is 77022086.

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 6728836 + 61293241 = 2594^2 + 7829^2 .

It is a cyclic number.

It is not a de Polignac number, because 68022077 - 2⁴ = 68022061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68022079) 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, 382058 + ... + 382235.

It is an arithmetic number, because the mean of its divisors is an integer number (17196615).

Almost surely, 2^68022077 is an apocalyptic number.

It is an amenable number.

68022077 is a deficient number, since it is larger than the sum of its proper divisors (764383).

68022077 is an equidigital number, since it uses as much as digits as its factorization.

68022077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764382.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 68022077 is about 8247.5497573522. The cubic root of 68022077 is about 408.2096773239.

Subtracting 68022077 from its reverse (77022086), we obtain a palindrome (9000009).

The spelling of 68022077 in words is "sixty-eight million, twenty-two thousand, seventy-seven".