68438677 has 4 divisors (see below), whose sum is σ = 68587596. Its totient is φ = 68289760.

The previous prime is 68438663. The next prime is 68438701. The reversal of 68438677 is 77683486.

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 36108081 + 32330596 = 6009^2 + 5686^2 .

It is a cyclic number.

It is not a de Polignac number, because 68438677 - 2¹¹ = 68436629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68438677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68438077) 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, 73768 + ... + 74689.

It is an arithmetic number, because the mean of its divisors is an integer number (17146899).

Almost surely, 2^68438677 is an apocalyptic number.

It is an amenable number.

68438677 is a deficient number, since it is larger than the sum of its proper divisors (148919).

68438677 is a wasteful number, since it uses less digits than its factorization.

68438677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148918.

The product of its digits is 1354752, while the sum is 49.

The square root of 68438677 is about 8272.7671912124. The cubic root of 68438677 is about 409.0413394290.

The spelling of 68438677 in words is "sixty-eight million, four hundred thirty-eight thousand, six hundred seventy-seven".