68459077 has 4 divisors (see below), whose sum is σ = 68631916. Its totient is φ = 68286240.

The previous prime is 68459009. The next prime is 68459081. The reversal of 68459077 is 77095486.

It is a happy number.

It is a Cunningham number, because it is equal to 8274²+1.

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 45887076 + 22572001 = 6774^2 + 4751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68459077 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 (68459177) 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, 85824 + ... + 86617.

It is an arithmetic number, because the mean of its divisors is an integer number (17157979).

Almost surely, 2^68459077 is an apocalyptic number.

It is an amenable number.

68459077 is a deficient number, since it is larger than the sum of its proper divisors (172839).

68459077 is a wasteful number, since it uses less digits than its factorization.

68459077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172838.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 68459077 is about 8274.0000604303. Note that the first 4 decimals coincide. The cubic root of 68459077 is about 409.0819773389.

The spelling of 68459077 in words is "sixty-eight million, four hundred fifty-nine thousand, seventy-seven".