68869655 has 4 divisors (see below), whose sum is σ = 82643592. Its totient is φ = 55095720.

The previous prime is 68869651. The next prime is 68869663. The reversal of 68869655 is 55696886.

It is a happy number.

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

It is not a de Polignac number, because 68869655 - 2² = 68869651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68869597 and 68869606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68869651) 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, 6886961 + ... + 6886970.

It is an arithmetic number, because the mean of its divisors is an integer number (20660898).

Almost surely, 2^68869655 is an apocalyptic number.

68869655 is a deficient number, since it is larger than the sum of its proper divisors (13773937).

68869655 is a wasteful number, since it uses less digits than its factorization.

68869655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13773936.

The product of its digits is 3110400, while the sum is 53.

The square root of 68869655 is about 8298.7743070890. The cubic root of 68869655 is about 409.8981603100.

The spelling of 68869655 in words is "sixty-eight million, eight hundred sixty-nine thousand, six hundred fifty-five".