68380655 has 16 divisors (see below), whose sum is σ = 94348800. Its totient is φ = 46604832.

The previous prime is 68380651. The next prime is 68380657. The reversal of 68380655 is 55608386.

It is a cyclic number.

It is not a de Polignac number, because 68380655 - 2² = 68380651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68380651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5 + ... + 11694.

It is an arithmetic number, because the mean of its divisors is an integer number (5896800).

Almost surely, 2^68380655 is an apocalyptic number.

68380655 is a deficient number, since it is larger than the sum of its proper divisors (25968145).

68380655 is a wasteful number, since it uses less digits than its factorization.

68380655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11878.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 68380655 is about 8269.2596403789. The cubic root of 68380655 is about 408.9257122825.

The spelling of 68380655 in words is "sixty-eight million, three hundred eighty thousand, six hundred fifty-five".